Did You Know ....... Medical Fact #1
10 Little Known Facts That Will Help You Live Longer
You read and hear things everyday about how to live a longer, healthier life, such as “eating
healthy” or “exercising.” But there are little-known facts that you can use to your advantage
as well when improving your health and extending your life. Keep reading for 10 facts that
you should know about when it comes to living a longer, healthier life.
Did you know?
1. You are most likely to have a heart attack on a Monday or just after you have been
diagnosed with flu or some other respiratory ailments. You should learn the warning signs of a
heart attack and also take steps to keep your heart healthy.
2. If you suffer from allergies, you can alleviate the symptoms by rinsing your nose with salt
water. This is easy to do and is better for you than taking over the counter medications to
combat allergies that can cause drowsiness.
3. Use the front door of your house instead of the door that leads into the kitchen. According
to research, those who pass through the kitchen all of the time eat 15 percent more than
those who use another entryway to the house.
4. Obesity is not only dangerous to your health, but expensive as well. You will pay more for
clothing, plane seats and gasoline if you are obese. You can prevent future health problems
due to obesity and save money at the same time by losing weight.
5. Smokers not only increase their risk for lung cancer and emphysema, but they also
experience a poor night of sleep. They are usually not well rested in the morning because
they experience withdrawal symptoms from the nicotine during the night.
6. If you eat fruits and vegetables, you can produce your own salicylic acid, which is the key
ingredient in aspirin and other pain relievers. Eating fruits and vegetables can help with antiinflammatory pain as well as headache pain and are healthy for your body. They also do not
have the same negative side effects such as bleeding or liver disease, as do aspirin and other
pain relievers. If you want to reduce inflammation and treat pain, eat fruits and vegetables
on a daily basis, especially if you have a condition that causes chronic pain.
7. If you manage to take a 20 minute nap per day, you can boost your mood and also increase
your productivity. Not only that, but your heart can actually benefit from this short nap.
Studies indicate that men who took naps three times a week had less risk of a heart related
death.
8. Want white teeth? Avoid chemicals and use baking soda. Baking soda can actually whiten
the teeth. Some of the chemicals found in artificial tooth whiteners can be dangerous but
baking soda is completely safe.
9. Clean your sink. There are more germs and bacteria in your kitchen sink than in your
bathroom. Do not use a sponge. Rather, clean your sink with a cloth that you can wash in hot
water.
10. Lose weight with a food diary. Food dairies can make you more accountable to yourself
when it comes to counting daily calories and can also help you discover how you are getting
extra calories. Just make sure you are writing down every single thing you put in your mouth –
including beverages.
Check This Out ..... http://www.wikihow.com/Live-a-Long-Life
 A- Even an obese, flabby body could be worth more than $45 million if
all of the usable parts were sold, according to a survey by Wired
magazine, using cost estimates from US hospitals and insurance
companies. And the most valuable part isn’t the organs, but bone
marrow, valued at $23 million (based on 1,000 grams at $23,000 per
gram).
 B- A sneeze can exceed a speed of 100 miles per hour, while a cough
releases a blast of air that travels at up to 60 mph.
 C- We share 98.4 percent of our DNA with chimpanzees—and 70 percent
with slugs
 On average women say 7,000 words per day. Men manage just over 2000.
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 The largest cell in the human body is the female ovum, or egg cell. It is
about 1/180 inch in diameter. The smallest cell in the human body is the
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male sperm. It takes about 175,000 sperm cells to weigh as much as a
single egg cell.
A person will die from total lack of sleep sooner than from starvation.
Death will occur about 10 days without sleep, while starvation takes a few
weeks.
There are over 300 billion new cells produced by an adult every day.
By the time you turn 70, your heart will have beat some two-and-a-half
billion times (figuring on an average of 70 beats per minute.)
Each square inch of human skin consists of twenty feet of blood vessels
It takes 17 muscles to smile --- 43 to frown.
Laughing lowers levels of stress hormones and strengthens the immune
system. Six-year-olds laugh an average of 300 times a day. Adults only laugh
15 to 100 times a day.
The sound of a snore (up to 69 decibels) can be almost as loud as the noise
of a pneumatic drill.
There are four main Blood types: A, B, AB and O and each Blood type is
either Rh positive or negative. Blood types in the US - Type O positive
38.4%, O negative 7.7%, A positive 32.3%, A negative 6.5%, B positive 9.4%,
B negative 1.7%, AB positive 3.2%, AB negative 0.7%
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 Your stomach cells secrete hydrochloric acid, a corrosive compound used to
treat metals in the industrial world. It can pickle steel, but mucous lining
the stomach wall keeps this poisonous liquid safely in the digestive system.
 The human brain remembers on an average 50,000 different aromas.
 One of the best aspects of the human body is that the thigh bones of
human beings are stronger than concrete.There are about 250 million
people with diabetes in the world.
 Type 1 diabetes is growing by 3% per year in children and adolescents.
 It is estimated that 70,000 children under 15 develop type 1 diabetes each
year (200 children a day).
 The brain is the most amazing and complex organ in this universe and its
research continues to throw up new facts that surprise’s us. The brain is
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capable of being modified or improved even as we age. It is never used to
its full capacity.
The human brain has about 100,000,000,000 or 100 billion neurons. From
the age of 35 years about 7000 neurons are lost daily.
Brain is composed of 75 to 80% water. Dehydration can affect proper
functioning of brain
20,000 people in the world die daily due to cancer
1 in 8 deaths that occur in the world is due to cancer
Cancer deaths outnumber deaths due to AIDS, Tuberculosis and Malaria
combined
. Globally, every five seconds, a person goes blind.
Vitamin E is the powerful antioxidant commonly found in nuts, fortified
cereals and sweet potatoes and it helps decrease the development of agerelated macular degeneration and cataract.
100 Very Cool Facts About The Human Body
The human body is an incredibly complex and intricate system, one that still
baffles doctors and researchers on a regular basis despite thousands of years
of medical knowledge. As a result, it shouldn’t be any surprise that even body
parts and functions we deal with every day have bizarre or unexpected facts
and explanations behind them. From sneezes to fingernail growth, here are
100 weird, wacky, and interesting facts about the human body.
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The Brain The human brain is the most complex and least understood part
of the human anatomy. There may be a lot we don’t know, but here are a few
interesting facts that we’ve got covered.
o
Nerve impulses to and from the brain travel as fast as 170
miles per hour. Ever wonder how you can react so fast to things
around you or why that stubbed toe hurts right away? It’s due to
the super-speedy movement of nerve impulses from your brain to
the rest of your body and vice versa, bringing reactions at the
speed of a high powered luxury sports car.
o The brain operates on the same amount of power as 10-watt
light bulb. The cartoon image of a light bulb over your head when
a great thought occurs isn’t too far off the mark. Your brain
generates as much energy as a small light bulb even when you’re
sleeping.
o The human brain cell can hold 5 times as much information
as the Encyclopedia Britannica. Or any other encyclopedia for
that matter. Scientists have yet to settle on a definitive amount,
but the storage capacity of the brain in electronic terms is thought
to be between 3 or even 1,000 terabytes. The National Archives
of Britain, containing over 900 years of history, only takes up 70
terabytes, making your brain’s memory power pretty darn
impressive.
o Your brain uses 20% of the oxygen that enters your
bloodstream. The brain only makes up about 2% of our body
mass, yet consumes more oxygen than any other organ in the
body, making it extremely susceptible to damage related to
oxygen deprivation. So breathe deep to keep your brain happy
and swimming in oxygenated cells.
o The brain is much more active at night than during the
day.Logically, you would think that all the moving around,
complicated calculations and tasks and general interaction we do
on a daily basis during our working hours would take a lot
more brain power than, say, lying in bed. Turns out, the opposite
is true. When you turn off your brain turns on. Scientists don’t yet
know why this is but you can thank the hard work of your brain
while you sleep for all those pleasant dreams.
o Scientists say the higher your I.Q. the more you dream. While
this may be true, don’t take it as a sign you’re mentally lacking if
you can’t recall your dreams. Most of us don’t remember many of
our dreams and the average length of most dreams is only 2-3
seconds–barely long enough to register.
o Neurons continue to grow throughout human life. For years
scientists and doctors thought that brain and neural tissue
couldn’t grow or regenerate. While it doesn’t act in the same
manner as tissues in many other parts of the body, neurons can
and do grow throughout your life, adding a whole new dimension
to the study of the brain and the illnesses that affect it.
Information travels at different speeds within different types
of neurons. Not all neurons are the same. There are a few
different types within the body and transmission along these
different kinds can be as slow as 0.5 meters/sec or as fast as 120
meters/sec.
o The brain itself cannot feel pain. While the brain might be the
pain center when you cut your finger or burn yourself, the brain
itself does not have pain receptors and cannot feel pain. That
doesn’t mean your head can’t hurt. The brain is surrounded by
loads of tissues, nerves and blood vessels that are plenty
receptive to pain and can give you a pounding headache.
o 80% of the brain is water. Your brain isn’t the firm, gray mass
you’ve seen on TV. Living brain tissue is a squishy, pink and jellylike organ thanks to the loads of blood and high water content of
the tissue. So the next time you’re feeling dehydrated get a drink
to keep your brain hydrated.
o
 Hair and Nails While they’re not a living part of your body, most people
spend a good amount of time caring for their hair and nails. The next time
you’re heading in for a haircut or manicure, think of these facts.
 Facial hair grows faster than any other hair on the body. If you’ve
ever had a covering of stubble on your face as you’re clocking out at 5
o’clock you’re probably pretty familiar with this. In fact, if the average
man never shaved his beard it would grow to over 30 feet during his
lifetime, longer than a killer whale.
 Every day the average person loses 60-100 strands of hair.Unless
you’re already bald, chances are good that you’re shedding pretty
heavily on a daily basis. Your hair loss will vary in accordance with the
season, pregnancy, illness, diet and age.
 Women’s hair is about half the diameter of men’s hair. While it might
sound strange, it shouldn’t come as too much of a surprise that men’s
hair should be coarser than that of women. Hair diameter also varies on
average between races, making hair plugs on some men look especially
obvious.
 One human hair can support 3.5 ounces. That’s about the weight of
two full size candy bars, and with hundreds of thousands of hairs on the
human head, makes the tale of Rapunzel much more plausible.
 The fastest growing nail is on the middle finger. And the nail on the
middle finger of your dominant hand will grow the fastest of all. Why is
not entirely known, but nail growth is related to the length of the finger,
with the longest fingers growing nails the fastest and shortest the
slowest.
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There are as many hairs per square inch on your body as a
chimpanzee. Humans are not quite the naked apes that we’re made out
to be. We have lots of hair, but on most of us it’s not obvious as a
majority of the hairs are too fine or light to be seen.
 Blondes have more hair. They’re said to have more fun, and they
definitely have more hair. Hair color determines how dense the hair on
your head is. The average human has 100,000 hair follicles, each of
which is capable of producing 20 individual hairs during a person’s
lifetime. Blondes average 146,000 follicles while people with black hair
tend to have about 110,000 follicles. Those with brown hair fit the
average with 100,000 follicles and redheads have the least dense hair,
with about 86,000 follicles.
 Fingernails grow nearly 4 times faster than toenails. If you notice
that you’re trimming your fingernails much more frequently than your
toenails you’re not just imagining it. The nails that get the most exposure
and are used most frequently grow the fastest. On average, nails on
both the toes and fingers grow about one-tenth of an inch each month.
 The lifespan of a human hair is 3 to 7 years on average. While you
quite a few hairs each day, your hairs actually have a pretty long life
providing they aren’t subject to any trauma. Your hairs will likely get to
see several different haircuts, styles, and even possibly decades before
they fall out on their own.
 You must lose over 50% of your scalp hairs before it is apparent to
anyone. You lose hundreds of hairs a day but you’ll have to lose a lot
more before you or anyone else will notice. Half of the hairs on your
pretty little head will have to disappear before your impending baldness
will become obvious to all those around you.
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Human hair is virtually indestructible. Aside from it’s flammability,
human hair decays at such a slow rate that it is practically nondisintegrative. If you’ve ever wondered how your how clogs up your
pipes so quick consider this: hair cannot be destroyed by cold, change
of climate, water, or other natural forces and it is resistant to many kinds
of acids and corrosive chemicals.
 Internal Organs Though we may not give them much thought unless they’re
bothering us, our internal organs are what allow us to go on eating, breathing
and walking around. Here are some things to consider the next time you hear
your stomach growl.
 The largest internal organ is the small intestine. Despite being called
the smaller of the two intestines, your small intestine is actually four
times as long as the average adult is tall. If it weren’t looped back and
forth upon itself it wouldn’t fit inside the abdominal cavity.
 The human heart creates enough pressure to squirt blood 30
feet. No wonder you can feel your heartbeat so easily. Pumping blood
through your body quickly and efficiently takes quite a bit of pressure
resulting in the strong contractions of the heart and the thick walls of the
ventricles which push blood to the body.
 The acid in your stomach is strong enough to dissolve
razorblades. While you certainly shouldn’t test the fortitude of your
stomach by eating a razorblade or any other metal object for that matter,
the acids that digest the food you eat aren’t to be taken lightly.
Hydrochloric acid, the type found in your stomach, is not only good at
dissolving the pizza you had for dinner but can also eat through many
types of metal.
 The human body is estimated to have 60,000 miles of blood
vessels. To put that in perspective, the distance around the earth is
about 25,000 miles, making the distance your blood vessels could travel
if laid end to end more than two times around the earth.
 You get a new stomach lining every three to four days. The mucuslike cells lining the walls of the stomach would soon dissolve due to the
strong digestive acids in your stomach if they weren’t constantly
replaced. Those with ulcers know how painful it can be when stomach
acid takes its toll on the lining of your stomach.
 The surface area of a human lung is equal to a tennis court. In order
to more efficiently oxygenate the blood, the lungs are filled with
thousands of branching bronchi and tiny, grape-like alveoli. These are
filled with microscopic capillaries which oxygen and carbon dioxide. The
large amount of surface area makes it easier for this exchange to take
place, and makes sure you stay properly oxygenated at all times.
Women’s hearts beat faster than men’s.The main reason for this is
simply that on average women tend to be smaller than men and have
less mass to pump blood to. But women’s and men’s hearts can actually
act quite differently, especially when experiencing trauma like aheart
attack, and many treatments that work for men must be adjusted or
changed entirely to work for women.
 Scientists have counted over 500 different liver functions. You may
not think much about your liver except after a long night of drinking, but
the liver is one of the body’s hardest working, largest and busiest
organs. Some of the functions your liver performs are: production of bile,
decomposition of red blood cells, plasma protein synthesis, and
detoxification.
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 The aorta is nearly the diameter of a garden hose. The average adult
heart is about the size of two fists, making the size of the aorta quite
impressive. The artery needs to be so large as it is the main supplier of
rich, oxygenated blood to the rest of the body.
 Your left lung is smaller than your right lung to make room for your
heart. For most people, if they were asked to draw a picture of what the
lungs look like they would draw both looking roughly the same size.
While the lungs are fairly similar in size, the human heart, though
located fairly centrally, is tilted slightly to the left making it take up more
room on that side of the body and crowding out that poor left lung.
 You could remove a large part of your internal organs and
survive. The human body may appear fragile but it’s possible to survive
even with the removal of the stomach, the spleen, 75 percent of the
liver, 80 percent of the intestines, one kidney, one lung, and virtually
every organ from the pelvic and groin area. You might not feel too great,
but the missing organs wouldn’t kill you.
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The adrenal glands change size throughout life. The adrenal glands,
lying right above the kidneys, are responsible for releasing stress
hormones like cortisol and adrenaline. In the seventh month of a fetus’
development, the glands are roughly the same size as the kidneys. At
birth, the glands have shrunk slightly and will continue to do so
throughout life. In fact, by the time a person reaches old age, the glands
are so small they can hardly be seen.
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Bodily Functions We may not always like to talk about them, but everyone
has to deal with bodily functions on a daily basis. These are a few facts about
the involuntary and sometimes unpleasant actions of our bodies.
 Sneezes regularly exceed 100 mph. There’s a good reason why you
can’t keep your eyes open when you sneeze–that sneeze is rocketing
out of your body at close to 100 mph. This is, of course, a good reason
to cover your mouth when you sneeze.
 Coughs clock in at about 60 mph. Viruses and colds get spread
around the office and the classroom quickly during cold and flu season.
With 60 mph coughs spraying germs far and wide, it’s no wonder.
 Women blink twice as many times as men do. That’s a lot of blinking
every day. The average person, man or woman, blinks about 13 times a
minute.
 A full bladder is roughly the size of a soft ball. No wonder you have
to run to bathroom when you feel the call of the wild. The average
bladder holds about 400-800 cc of fluid but most people will feel the urge
to go long before that at 250 to 300 cc.
 Approximately 75% of human waste is made of water. While we
might typically think that urine is the liquid part of human wasteproducts,
the truth is that what we consider solid waste is actually mostly water as
well. You should be thankful that most waste is fairly water-filled, as drier
harder stools are what cause constipation and are much harder and
sometimes painful to pass.
 Feet have 500,000 sweat glands and can produce more than a pint
of sweat a day. With that kind of sweat-producing power it’s no wonder
that your gym shoes have a stench that can peel paint. Additionally, men
usually have much more active sweat glands than women.
 During your lifetime, you will produce enough saliva to fill two
swimming pools. Saliva plays an important part in beginning the
digestive process and keeping the mouth lubricated, and your mouth
produces quite a bit of it on a daily basis.
 The average person expels flatulence 14 times each day. Even if
you’d like to think you’re too dignified to pass gas, the reality is that
almost everyone will at least a few times a day. Digestion causes the
body to release gases which can be painful if trapped in the abdomen
and not released.
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Earwax production is necessary for good ear health. While many
people find earwax to be disgusting, it’s actually a very important part of
your ear’s defense system. It protects the delicate inner ear from
bacteria, fungus, dirt and even insects. It also cleans and lubricates the
ear canal.
 Sex and Reproduction As taboo as it may be in some places, sex is an
important part of human life as a facet of relationships and the means to
reproduce. Here are a few things you might not have known.
 On any given day, sexual intercourse takes place 120 million times
on earth. Humans are a quickly proliferating species, and with about 4%
of the world’s population having sex on any given day, it’s no wonder
that birth rates continue to increase in many places all over the world.
 The largest cell in the human body is the female egg and the
smallest is the male sperm. While you can’t see skin cells or muscle
cells, the ovum is typically large enough to be seen with the naked eye
with a diameter of about a millimeter. The sperm cell, on the other hand,
is tiny, consisting of little more than nucleus.
 The three things pregnant women dream most of during their first
trimester are frogs, worms and potted plants. Pregnancy hormones
can cause mood swings, cravings and many other unexpected changes.
Oddly enough, hormones can often affect the types of dreams women
have and their vividness. The most common are these three types, but
many women also dream of water, giving birth or even have violent or
sexually charged dreams.
 Your teeth start growing 6 months before you are born. While few
babies are born with teeth in place, the teeth that will eventually push
through the gums of young children are formed long before the child
even leaves the womb. At 9 to 12 weeks the fetus starts to form the
teeth buds that will turn into baby teeth.
 Babies are always born with blue eyes. The color of your eyes
depends on the genes you get from your parents, but at birth most
babies appear to have blue eyes. The reason behind this is the pigment
melanin. The melanin in a newborn’s eyes often needs time after birth to
be fully deposited or to be darkened by exposure to ultraviolet light, later
revealing the baby’s true eye color.
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Babies are, pound for pound, stronger than an ox. While a baby
certainly couldn’t pull a covered wagon at its present size, if the child
were the size of an oxen it just might very well be able to. Babies have
especially strong and powerful legs for such tiny creatures, so watch out
for those kicks.
 One out of every 2,000 newborn infants has a tooth when they are
born. Nursing mothers may cringe at this fact. Sometimes the tooth is a
regular baby tooth that has already erupted and sometimes it is an extra
tooth that will fall out before the other set of choppers comes in.
 A fetus acquires fingerprints at the age of three months. When only
a small fraction of the way through its development, a fetus will have
already developed one of the most unique human traits: fingerprints. At
only 6-13 weeks of development, the whorls of what will be fingerprints
have already developed. Oddly enough, those fingerprints will not
change throughout the person’s life and will be one of the last things to
disappear after death.
 Every human spent about half an hour as a single cell. All life has to
begin somewhere, and even the largest humans spent a short part of
their lives as a single celled organism when sperm and egg cells first
combine. Shortly afterward, the cells begin rapidly dividing and begin
forming the components of a tiny embryo.
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Most men have erections every hour to hour and a half during
sleep. Most people’s bodies and minds are much more active when
they’re sleeping than they think. The combination of blood circulation
and testosterone production can cause erections during sleep and
they’re often a normal and necessary part of REM sleep.
 Senses The primary means by which we interact with the world around us is
through our senses. Here are some interesting facts about these five sensory
abilities.
 After eating too much, your hearing is less sharp. If you’re heading
to a concert or a musical after a big meal you may be doing yourself a
disservice. Try eating a smaller meal if you need to keep your hearing
pitch perfect.
 About one third of the human race has 20-20 vision. Glasses and
contact wearers are hardly alone in a world where two thirds of the
population have less than perfect vision. The amount of people with
perfect vision decreases further as they age.
 If saliva cannot dissolve something, you cannot taste it. In order for
foods, or anything else, to have a taste, chemicals from the substance
must be dissolved by saliva. If you don’t believe it, try drying off your
tongue before tasting something.
 Women are born better smellers than men and remain better
smellers over life. Studies have shown that women are more able to
correctly pinpoint just what a smell is. Women were better able to
identify citrus, vanilla, cinnamon and coffee smells. While women are
overall better smellers, there is an unfortunate 2% of the population with
no sense of smell at all.
 Your nose can remember 50,000 different scents. While a
bloodhound’s nose may be a million times more sensitive than a
human’s, that doesn’t mean that the human sense of smell is useless.
Humans can identify a wide variety of scents and many are strongly tied
to memories.
 Even small noises cause the pupils of the eyes to dilate. It is
believed that this is why surgeons, watchmakers and others who
perform delicate manual operations are so bothered by uninvited noise.
The sound causes their pupils to change focus and blur their vision,
making it harder to do their job well.
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Everyone has a unique smell, except for identical twins.Newborns
are able to recognize the smell of their mothers and many of us can
pinpoint the smell of our significant others and those we are close to.
Part of that smell is determined by genetics, but it’s also largely do to
environment, diet and personal hygiene products that create a unique
chemistry for each person.
 Aging and Death From the very young to the very old, aging is a necessary
and unavoidable part of life. Learn about the process with these interesting, if
somewhat strange facts.
 The ashes of a cremated person average about 9 pounds. A big part
of what gives the human body weight is the water trapped in our cells.
Once cremated, that water and a majority of our tissues are destroyed,
leaving little behind.
 Nails and hair do not continue to grow after we die. They do appear
longer when we die, however, as the skin dehydrates and pulls back
from the nail beds and scalp.
 By the age of 60, most people will have lost about half their taste
buds. Perhaps you shouldn’t trust your grandma’s cooking as much as
you do. Older individuals tend to lose their ability to taste, and many find
that they need much more intense flavoring in order to be able to fully
appreciate a dish.
 Your eyes are always the same size from birth but your nose and
ears never stop growing. When babies look up at you with those big
eyes, they’re the same size that they’ll be carrying around in their bodies
for the rest of their lives. Their ears and nose, however, will grow
throughout their lives and research has shown that growth peaks
in seven year cycles.
 By 60 years of age, 60-percent of men and 40-percent of women
will snore. If you’ve ever been kept awake by a snoring loved one you
know the sound can be deafening. Normal snores average around 60
decibels, the noise level of normal speech, intense snores can reach
more than 80 decibels, the approximate level caused by a jackhammer
breaking up concrete.
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A baby’s head is one-quarter of it’s total length, but by age 25 will
only be one-eighth of its total length. As it turns out, our adorably
oversized baby heads won’t change size as drastically as the rest of our
body. The legs and torso will lengthen, but the head won’t get much
longer.
 Disease and Injury Most of us will get injured or sick at some point in our
lives. Here are some facts on how the human body reacts to the stresses and
dangers from the outside world.
 Monday is the day of the week when the risk of heart attack is
greatest. Yet another reason to loathe Mondays! A ten year study in
Scotland found that 20% more people die of heart attacks on Mondays
than any other day of the week. Researchers theorize that it’s a
combination of too much fun over the weekend with the stress of going
back to work that causes the increase.
 Humans can make do longer without food than sleep. While you
might feel better prepared to stay up all night partying than to give up
eating, that feeling will be relatively short lived. Provided there is water,
the average human could survive a month to two months without food
depending on their body fat and other factors. Sleep deprived people,
however, start experiencing radical personality and psychological
changes after only a few sleepless days. The longest recorded time
anyone has ever gone without sleep is 11 days, at the end of which the
experimenter was awake, but stumbled over words, hallucinated and
frequently forgot what he was doing.
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A simple, moderately severe sunburn damages the blood vessels
extensively. How extensively? Studies have shown that it can take four
to fifteen months for them to return to their normal condition. Consider
that the next time you’re feeling too lazy to apply sunscreen before
heading outside.
 Over 90% of diseases are caused or complicated by stress. That
high stress job you have could be doing more than just wearing you
down each day. It could also be increasing your chances of having a
variety of serious medical conditions like depression, high blood
pressure and heart disease.
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A human head remains conscious for about 15 to 20 seconds after
it is been decapitated. While it might be gross to think about, the blood
in the head may be enough to keep someone alive and conscious for a
few seconds after the head has been separated from the body, though
reports as to the accuracy of this are widely varying.
 Muscles and Bones Muscles and Bones provide the framework for our
bodies and allow us to jump, run or just lie on the couch. Here are a few facts
to ponder the next time you’re lying around.
 It takes 17 muscles to smile and 43 to frown. Unless you’re trying to
give your face a bit of a workout, smiling is a much easier option for
most of us. Anyone who’s ever scowled, squinted or frowned for a long
period of time knows how it tires out the face which doesn’t do a thing to
improve your mood.
 Babies are born with 300 bones, but by adulthood the number is
reduced to 206. The reason for this is that many of the bones of
children are composed of smaller component bones that are not yet
fused like those in the skull. This makes it easier for the baby to pass
through the birth canal. The bones harden and fuse as the children
grow.
 We are about 1 cm taller in the morning than in the evening. The
cartilage between our bones gets compressed by standing, sitting and
other daily activities as the day goes on, making us just a little shorter at
the end of the day than at the beginning.
 The strongest muscle in the human body is the tongue. While you
may not be able to bench press much with your tongue, it is in fact the
strongest muscle in your body in proportion to its size. If you think about
it, every time you eat, swallow or talk you use your tongue, ensuring it
gets quite a workout throughout the day.
 The hardest bone in the human body is the jawbone. The next time
someone suggests you take it on the chin, you might be well advised to
take their advice as the jawbone is one of the most durable and hard to
break bones in the body.
 You use 200 muscles to take one step. Depending on how you divide
up muscle groups, just to take a single step you use somewhere in the
neighborhood of 200 muscles. That’s a lot of work for the muscles
considering most of us take about 10,000 steps a day.
 The tooth is the only part of the human body that can’t repair
itself. If you’ve ever chipped a tooth you know just how sadly true this
one is. The outer layer of the tooth is enamel which is not a living tissue.
Since it’s not alive, it can’t repair itself, leaving your dentist to do the
work instead.
 It takes twice as long to lose new muscle if you stop working out
than it did to gain it. Lazy people out there shouldn’t use this as
motivation to not work out, however. It’s relatively easy to build new
muscle tissue and get your muscles in shape, so if anything, this fact
should be motivation to get off the couch and get moving.
 Bone is stronger than some steel. This doesn’t mean your bones can’t
break of course, as they are much less dense than steel. Bone has been
found to have a tensile strength of 20,000 psi while steel is much higher
at 70,000 psi. Steel is much heavier than bone, however, and pound for
pound bone is the stronger material.
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The feet account for one quarter of all the human body’s bones.
You may not give your feet much thought but they are home to more
bones than any other part of your body. How many? Of the two hundred
or so bones in the body, the feet contain a whopping 52 of them.
 Microscopic Level Much of what takes place in our bodies happens at a
level that we simply can’t see with the naked eye. These facts will show you
that sometimes that might be for the best.
 About 32 million bacteria call every inch of your skin
home.Germaphobes don’t need to worry however, as a majority of
these are entirely harmless and some are even helpful in maintaining a
healthy body.
 Humans shed and regrow outer skin cells about every 27 days.Skin
protects your delicate internal organs from the elements and as such,
dries and flakes off completely about once a month so that it can
maintain its strength. Chances are that last month’s skin is still hanging
around your house in the form of the dust on your bookshelf or under the
couch.
 Three hundred million cells die in the human body every
minute. While that sounds like a lot, it’s really just a small fraction of the
cells that are in the human body. Estimates have placed the total
number of cells in the body at 10-50 trillion so you can afford to lose a
few hundred million without a hitch.
 Humans shed about 600,000 particles of skin every hour. You may
not think much about losing skin if yours isn’t dry or flaky or peeling from
a sunburn, but your skin is constantly renewing itself and shedding dead
cells.
 Every day an adult body produces 300 billion new cells. Your body
not only needs energy to keep your organs up and running but also to
constantly repair and build new cells to form the building blocks of your
body itself.
Every tongue print is unique. If you’re planning on committing a crime,
don’t think you’ll get away with leaving a tongue print behind. Each
tongue is different and yours could be unique enough to finger you as
the culprit.
 Your body has enough iron in it to make a nail 3 inches
long.Anyone who has ever tasted blood knows that it has a slightly
metallic taste. This is due to the high levels of iron in the blood. If you
were to take all of this iron out of the body, you’d have enough to make
a small nail and very severe anemia.
 The most common blood type in the world is Type O. Blood banks
find it valuable as it can be given to those with both type A and B blood.
The rarest blood type, A-H or Bombay blood due to the location of its
discovery, has been found in less than hundred people since it was
discovered.
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Human lips have a reddish color because of the great
concentration of tiny capillaries just below the skin. The blood in
these capillaries is normally highly oxygenated and therefore quite red.
This explains why the lips appear pale when a person is anemic or has
lost a great deal of blood. It also explains why the lips turn blue in very
cold weather. Cold causes the capillaries to constrict, and the blood
loses oxygen and changes to a darker color.
Miscellaneous Here are a few things you might not have known about all
different parts of your anatomy.
 The colder the room you sleep in, the better the chances are that
you’ll have a bad dream. It isn’t entirely clear to scientists why this is
the case, but if you are opposed to having nightmares you might want to
keep yourself a little toastier at night.
 Tears and mucus contain an enzyme (lysozyme) that breaks down
the cell wall of many bacteria. This is to your advantage, as the mucus
that lines your nose and throat, as well as the tears that wet your eyes
are helping to prevent bacteria from infecting those areas and making
you sick.
 Your body gives off enough heat in 30 minutes to bring half a
gallon of water to a boil. If you’ve seen the Matrix you are aware of the
energy potentially generated by the human body. Our bodies expend a
large amount of calories keeping us at a steady 98.6 degrees, enough to
boil water or even cook pasta.
 Your ears secrete more earwax when you are afraid than when you
aren’t. The chemicals and hormones released when you are afraid
could be having unseen effects on your body in the form of earwax.
Studies have suggested that fear causes the ears to produce more of
the sticky substance, though the reasons are not yet clear.
 It is not possible to tickle yourself. Even the most ticklish among us
do not have the ability to tickle ourselves. The reason behind this is that
your brain predicts the tickle from information it already has, like how
your fingers are moving. Because it knows and can feel where the tickle
is coming from, your brain doesn’t respond in the same way as it would
if someone else was doing the tickling.
 The width of your armspan stretched out is the length of your
whole body. While not exact down to the last millimeter, your armspan
is a pretty good estimator of your height.
 Humans are the only animals to produce emotional tears. In the
animal world, humans are the biggest crybabies, being the only animals
who cry because they’ve had a bad day, lost a loved one, or just don’t
feel good.
 Right-handed people live, on average, nine years longer than lefthanded people do. This doesn’t have a genetic basis, but is largely due
to the fact that a majority of the machines and tools we use on a daily
basis are designed for those who are right handed, making them
somewhat dangerous for lefties to use and resulting in thousands of
accidents and deaths each year.
 Women burn fat more slowly than men, by a rate of about 50
calories a day. Most men have a much easier time burning fat than
women. Women, because of their reproductive role, generally require a
higher basic body fat proportion than men, and as a result their bodies
don’t get rid of excess fat at the same rate as men.
 Koalas and primates are the only animals with unique
fingerprints. Humans, apes and koalas are unique in the animal
kingdom due to the tiny prints on the fingers of their hands. Studies on
primates have suggested that even cloned individuals have unique
fingerprints.
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The indentation in the middle of the area between the nose and the
upper lip has a name. It is called the philtrum. Scientists have yet to
figure out what purpose this indentation serves, though the ancient
Greeks thought it to be one of the most erogenous places on the body
 It’s possible for your body to survive without a surprisingly large fraction of
its internal organs. Even if you lose your stomach, your spleen, 75% of your
liver, 80% of your intestines, one kidney, one lung, and virtually every organ
from your pelvic and groin area, you wouldn’t be very healthy, but you
would live.
 During your lifetime, you will produce enough saliva to fill two swimming
pools. Actually, Saliva is more important than you realize. If your saliva
cannot dissolve something, you cannot taste it.
 The largest cell in the human body is the female egg and the smallest is the
male sperm. The egg is actually the only cell in the body that is visible by
the n*k*d eye.
 The strongest muscle in the human body is the tongue and the hardest
bone is the jawbone.
 The human feet have 52 bones, accounting for one quarter of all the
human body’s bones.
 Feet have 500,000 sweat glands and can produce more than a pint of
sweat a day.
 The acid in your stomach is strong enough to dissolve razorblades. The
reason it doesn’t eat away at your stomach is that the cells of your stomach
wall renew themselves so frequently that you get a new stomach lining
every three to four days.
 The human lungs contain approximately 2,400 kilometres (1,500 mi) of
airways and 300 to 500 million hollow cavities, having a total surface area
of about 70 square metres, roughly the same area as one side of
a tennis court. Furthermore, if all of the capillaries that surround the lung
cavities were unwound and laid end to end, they would extend for about
992 kilometres. Also, your left lung is smaller than your right lung to make
room for your heart.
 Sneezes regularly exceed 100 mph, while coughs clock in at about 60 mph.
 Your body gives off enough heat in 30 minutes to bring half a gallon of
water to a boil.
 Your body has enough iron in it to make a nail 3 inches long.
 Earwax production is necessary for good ear health. It protects the delicate
inner ear from bacteria, fungus, dirt and even insects. It also cleans and
lubricates the ear canal.
 Everyone has a unique smell, except for identical twins, who smell the
same.
 Your teeth start growing 6 months before you are born. This is why one out
of every 2,000 newborn infants has a tooth when they are born
 A baby’s head is one-quarter of it’s total length, but by the age of 25 will
only be one-eighth of its total length. This is because people’s heads grow
at a much slower rate than the rest of their bodies.
 Babies are born with 300 bones, but by adulthood the number is reduced
to 206. Some of the bones, like skull bones, get fused into each other,
bringing down the total number.
 It is not possible to tickle yourself. This is because when you attempt to
tickle yourself you are totally aware of the exact time and manner in which
the tickling will occur, unlikewhen someone else tickles you.
 Less than one third of the human race has 20-20 vision. This means that
two out of three people cannot see perfectly.
 Your nose can remember 50,000 different scents. But if you are a woman,
you are a better smeller than men, and will remain a better smeller
throughout your life.
 The human body is estimated to have 60,000 miles of blood vessels.
 The three things pregnant women dream most of during their first
trimester are frogs, worms and potted plants. Scientists have no idea why
this is so, but attribute it to the growing imbalance of hormones in the body
during pregnancy.
 The lifespan of a human hair is 3 to 7 years on average. Every day the
average person loses 60-100 strands of hair. But don’t worry, you must lose
over 50% of your scalp hairs before it is apparent to anyone.
 The human brain cell can hold 5 times as much information as an
encyclopedia. Your brain uses 20% of the oxygen that enters your
bloodstream, and is itself made up of 80% water. Though it interprets pain
signals from the rest of the body, the brain itself cannot
feel pain.
 The tooth is the only part of the human body that can’t repair itself.
 Your eyes are always the same size from birth but your nose and ears never
stop growing.
 By 60 years of age, 60% of men and 40% of women will snore.
 We are about 1 cm taller in the morning than in the evening, because
during normal activities during the day, the cartilage in our knees and other
areas slowly compress.
 The brain operates on the same amount of power as 10-watt light bulb,
even while you are sleeping. In fact, the brain is much more active at night
than during the day.
 Nerve impulses to and from the brain travel as fast as 170 miles per
hour. Neurons continue to grow throughout human life. Information travels
at different speeds within different types of neurons.
 It is a fact that people who dream more often and more vividly, on an
average have a higher Intelligence Quotient.
 The fastest growing nail is on the middle finger.
 Facial hair grows faster than any other hair on the body. This is true for
men as well as women.
 There are as many hairs per square inch on your body as a chimpanzee.
 A human foetus acquires fingerprints at the age of three months.
 By the age of 60, most people will have lost about half their taste buds.
 About 32 million bacteria call every inch of your skin home. But don’t
worry, a majority of these are harmless or even helpful bacteria.
 The colder the room you sleep in, the higher the chances are that you’ll
have a bad dream.
 Human lips have a reddish color because of the great concentration of tiny
capillaries just below the skin.
 Three hundred million cells die in the human body every minute.
 Like fingerprints, every individual has an unique tongue print that can be
used for identification.
 A human head remains conscious for about 15 to 20 seconds after it is been
decapitated.
 It takes 17 muscles to smile and 43 to frown.
 Humans can make do longer without food than sleep. Provided there is
water, the average human could survive a month to two months without
food depending on their body fat and other factors. Sleep deprived people,
however, start experiencing radical personality and psychological changes
after only a few sleepless days. The longest recorded time anyone has ever
gone without sleep is 11 days, at the end of which the experimenter was
awake, but stumbled over words, hallucinated and frequently forgot what
he was doing.
 The most common blood type in the world is Type O.The rarest blood type,
A-H or Bombay blood, due to the location of its discovery, has been found
in less than hundred people since it was discovered
 Every human spent about half an hour after being conceived, as a single
cell. Shortly afterward, the cells begin rapidly dividing and begin forming
the components of a tiny embryo.
 Right-handed people live, on average, nine years longer than left-handed
people do. This is largely due to the fact that a majority of the machines
and tools we use on a daily basis are designed for those who are right
handed, making them somewhat dangerous for lefties to use and resulting
in thousands of accidents and deaths each year.
 Your ears secrete more earwax when you are afraid than when you aren’t.
 Koalas and primates are the only animals with unique fingerprints.
 Humans are the only animals to produce emotional tears.
 The human heart creates enough pressure to squirt blood 30 feet in the air.
 The length from your wrist to your elbow is the same as the length of your
foot.
 Your heart beats 101,000 times a day. During your lifetime it will beat
about 3 billion times and pump about 400 million litres (800 million pints)
of blood.
 It is impossible to lick your elbow. Well, for almost everyone… but a few
can.
 Your mouth produces 1 litre (1.8 pints) of saliva a day.
 The human head contains 22 bones. More on the head and brains
 On average, you breathe 23,000 times a day.
 Breathing generates about 0.6g of CO2 every minute.
 On average, people can hold their breath for about one minute. The world
record is 21 minutes 29 seconds, by David Merlini.
 On average, you speak almost 5,000 words a day – although almost 80% of
speaking is self-talk (talking to yourself).
 Over the last 150 years the average height of people in industrialized
nations increased by 10 cm (4 in).
 In the 19th century, American men were the tallest in the world, averaging
1,71 metres (5’6″). Today, the average height for American men is 1,763 m
(5 feet 9-and-half inches), compared to 1,815 m (5’10″) for Swedes, and
1,843 m (5’11″) for the Dutch, the tallest Caucasians.
 The tallest nation in the world is the Watusis of Burundi: 1.98 m (6 feet 6
inches) tall.
 If the amount of water in your body is reduced by just 1%, you’ll feel
thirsty.
 It is impossible to sneeze and keep one’s eyes open at the same time.
 55% of people yawn within 5 minutes of seeing someone else yawn.
 Hippocrates, the Father of Medicine, suggested that a woman could
enlarge her bust line by singing loudly and often.
 A person can live without food for about a month, but only about a week
without water.
 You’ll drink about 75,000 litres (20,000 gallons) of water in your lifetime.
 After a certain period of growth, hair becomes dormant. That means that it
is attached to the hair follicle until replaced by new hair.
 Hair on the head grows for between two and six years before being
replaced. In the case of baldness, the dormant hair was not replaced with
new hair.
 Men loose about 40 hairs a day. Women loose about 70 hairs a day.
 In the Middle Ages the length from the tip of the middle finger to the elbow
was called an ell.
 A person remains conscious for eight seconds after being decapitated.
 The first successful human sex change took place in 1950 when Danish
doctor Christian Hamburger operated on New Yorker George Jorgensen,
who became Christine Jorgensen.
 The muscle that lets your eye blink is the fastest muscle in your body. It
allows you to blink 5 times a second.
 On average, you blink 15 000 times a day. Women blink twice as much as
men.
 A typical athlete’s heart churns out 25 to 30 litres (up to 8 gallons) of blood
per minute.
 24 of the known 118 elements are found in your body – see What the
average human body contains
 We have four basic tastes plus umami. The salt and sweet taste buds are at
the tip of the tongue, bitter at the base, and sour along the sides; umami is
a mixture of tastes sensed along the center of the tongue.
 Not all our taste buds are on our tongue; about 10% are on the palette and
the cheeks.
 Unless food is mixed with saliva you cannot taste it.
 The liver is the largest of the body’s internal organs. The skin is the body’s
largest organ.
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On average a hiccup lasts 5 minutes.
Fingernails grow nearly 4 times faster than toenails.
Your middle fingernail grows the fastest.
Your finger nails grow at 1 nanometre per second (0.000 000 001 m/s).
Your hair grows at 4 nanometres per second (0.000 000 004 m/s).
It takes about 3 months for the transplanted hair to start growing again.
About 13% of people are left-handed. Up from 11% in the past.
In 1900, a person could expect to live to be 47. Today, the average life
expectancy for men and women in developed countries is longer than 70
years.
A newborn baby’s head accounts for one-quarter of its weight.
King Henry I, who ruled in the England in the 12th century, standardized the
yard as the distance from the thumb of his outstretched arm to his nose.
The bones in your body are not white – they range in color from beige to
light brown. The bones you see in museums are white because they have
been boiled and cleaned.
Our eyes are always the same size from birth.
Every person has a unique tongue print.
If all your DNA is stretched out, it would reach to the moon 6,000 times.
Approximately two-thirds of a person’s body weight is water. Blood is 92%
water. The brain is 75% water and muscles are 75% water.
The colored part of the eye is called the iris. Behind the iris is the soft,
rubbery lens which focuses the light on to a layer, called the retina, in the
back of the eye. The retina contains about 125 million rods and 7 million
cones. The rods pick up shades of gray and help us see in dim light. The
cones work best in bright light to pick up colors.
We actually do not see with our eyes – we see with our brains. The eyes
basically are the cameras of the brain
 1. There are 2.5 trillion (give or take) of red blood cells in your body at any
moment. To maintain this number, about two and a half million new ones
need to be produced every second by your bone marrow. That's like a new
population of the city of Toronto every second
 2 .Considering all the tissues and cells in your body, 25 million new cells are
being produced each second. That's a little less than the population of
Canada - every second !
 3 .A red blood cell can circumnavigate your body in under 20 seconds
 4. The average red blood cell lives for 120 days.
 5. Nerve Impulses travel at over 400 km/hr (25 mi/hr).
 6.A sneeze generates a wind of 166 km/hr (100 mi/hr), and a cough moves
out at 100 km/hr (60 mi/hr)
 7.Our heart beats around 100,00 times every day.
 8.Our blood is on a 60,000-mile journey.
 9.Our eyes can distinguish up to one million color surfaces and take in more
information than the largest telescope known to man.
 10.Our lungs inhale over two million liters of air every day, without even
thinking. They are large enough to cover a tennis court.
 11. We give birth to 100 billion red cells every day.
 12. W hen we touch something, we send a message to our brain at 124
mph
 13.We exercise at least 30 muscles when we smile.
 14.We are about 70 percent water
 15.We make one liter of saliva a day
 16.Our nose is our personal air-conditioning system: it warms cold air, cools
hot air and filters impurities.
 17.In one square inch of our hand we have nine feet of blood vessels, 600
pain sensors, 9000 nerve endings, 36 heat sensors and 75 pressure sensors.
 18.We have copper, zinc, cobalt, calcium, manganese, phosphates, nickel
and silicon in our bodies
 19.It is believed that the main purpose of eyebrows is to keep sweat out of
the eyes.20.A person can expect to breathe in about 40 pounds of dust
over his/her lifetime.
 20. A person can expect to breathe in about 40 pounds of dust over his/her
lifetime.
 21 There are more living organisms on the skin of a single human being
than there are human beings on the surface of the earth.
 22 From the age of thirty, humans gradually begin to shrink in size
 23.Your body contains enough iron to make a spike strong enough to hold
your weight
 24.The surface area of a human lung is equal to that of a tennis court.
 25.Most people have lost fifty per cent of their taste buds by the time they
reach the age of sixty.
 26.The amount of carbon in the human body is enough to fill about 9,000
'lead' pencils.
 27.One square inch of human skin contains 625 sweat glands.
 28.When you blush, your stomach lining also reddens.
 29.The human body has less muscles in it than a caterpillar.
 30.If you could save all the times your eyes blink in one life time and use
them all at once you would see blackness for 1.2 years!
 31.The life span of a taste bud is ten days.
 32.It's impossible to sneeze with your eyes open.
 33.Give a tennis ball a good, hard squeeze. You're using about the same
amount of force your heart uses to pump blood out to the body.
 34.The aorta, the largest artery in the body, is almost the diameter of a
garden hose.
 35.Capillaries, on the other hand, are so small that it takes ten of them to
equal the thickness of a human hair.
 36.Your body has about 5.6 liters (6 quarts) of blood. This 5.6 liters of blood
circulates through the body three times every minute
 37.The heart pumps about 1 million barrels of blood during an average
lifetime--that's enough to fill more than 3 super tankers.
 38.Babies start dreaming even before they're born
 .39.The human body can function without a brain
 40.Humans are the only primates that don't have pigment in the palms of
their hands.
 41.10% of human dry weight comes from bacteria
 42.There is more bacteria in your mouth than the human population of the
United States and Canada combined .
 43.Every square inch of the human body has an average of 32 million
bacteria on it
 44.A fetus acquires fingerprints at the age of three months
 45.You sit on the biggest muscle in your body, the gluteus maximus a.k.a.
the butt. Each of the two cheeky muscles tips the scales at about two
pounds (not including the overlying fat layer).
 46.The tiniest muscle, the stapedius of the middle ear , is just one-fifth of
an inch long
 47.The average human head weighs about 10 pounds
 48.The average human brain weighs three pounds
 49.The DNA helix measures 80 billionths of an inch wide
 50.Your eyeballs are three and a half percent salt
 51.Head lice actually prefer to live on clean heads, not on dirty ones
 52.If Barbie were life-size, her measurements would be 39-23-33. She
would stand seven feet, two inches tall and have a neck twice the length of
a normal human's neck.
 53.It takes about 20 seconds for a red blood cell to circle the whole body.
 54.An average human drinks about 16,000 gallons of water in a lifetime
 55.Beards are the fastest growing hairs on the human body. If the average
man never trimmed his beard, it would grow to nearly 30 feet long in his
lifetime.
 56.Humans shed about 600,000 particles of skin every hour - about 1.5
pounds a year. By 70 years of age, an average person will have lost 105
pounds of skin.
 57.It only takes 7lbs of pressure to rip your ear off.
 58.When you sneeze, all your bodily functions stop - even your heart
 59.Human teeth are almost as hard as rocks.60.You burn more calories
sleeping than you do watching T.V.
 Our eyes never grow, and our nose and ears never stop growing.
 62.The thumbnail grows the slowest; the middle nail grows the fastest
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63.Children grow faster in the springtime.
64.Women blink nearly twice as much as men
65.You can only smell 1/20th as well as a dog.
66.People are the only animals in the world who cry tears.
67.Every month you grow a brand new outer layer of skin..."a new you!".
68.In your very own lifetime, you'll produce enough spit to fill two
swimming pools.
69.You breathe in about 7 quarts of air every minute. Good ! Air is cost free
70.Your dad sweats enough each day to fill up a 6 pack of soda cans...and
then some.
71.Every time you lick a stamp, you're consuming 1/10 of a calorie.
72.If you yelled for 8 years, 7 months and 6 days, you would have produced
enough sound energy to heat one cup of coffee.
73.If you toot consistently for 6 years and 9 months, enough gas is
produced to create the energy of an atomic bomb.
74.The human heart creates enough pressure when it pumps blood, that it
could squirt blood 30 feet.
75.Banging your head against a wall uses 150 calories an hour.
76.On average people fear spiders more than they do death.
77.Americans on the average eat 18 acres of pizza every day.
78.Did you know that you are more likely to be killed by a champagne cork
than by a poisonous spider?
79.Right-handed people live, on average, nine years longer than lefthanded people do.
80.If you blink one eye you move over 200 muscles.
81.The length of your foot is the same as that of your forearm between
your wrist and the inside of your elbow.
82.In 24 hours, the blood in the body travels a total of 12,000 miles - that's
four times the width of North America.
83.The human gut contains about 1kg (2.2 lbs) of bacteria. In fact, there are
more bacteria growing in and on the body than there are human cells.
 84.Humans have more facial muscles than any other animal on earth - 22
on each side of the face
 .85.Before their first birthday, average babies will have dribbled 255 pints
of saliva. By the time they're two years old, they will have crawled 93 miles.
 86.The human hand contains three main nerves, two major arteries and 27
different bones - more of the body is devoted to controlling the hands than
any other part of the body.
 87.In the average lifetime, we spend five years eating and we consume
around 7,000 times our own weight in food
 .88.When we go to sleep and enter REM (Rapid Eye Movement),our bodies
become completely paralyzed as areas of the brain that control movement
are de-activated. It is this that stops us falling out of bed.
 89.By the time a woman has reached her 60s, she will have released around
450 baby making eggs
 90.When full, the human bladder can hold two pints of urine.
 91.In a lifetime, a human being will grow six feet of nose hair and shed 42
lbs of dead skin.
 92.A human being can look forward to having sex an average of 2,580 times
with five different partners
 93.Skin can now be artificially grown. One amazing result of this is that the
skin from one hand could be grown into enough to cover six football
pitches.
 94.There are 137 million light sensitive cells in the eye's retina and the fluid
that fills the eye is changed 15 times a day.
 95.Humans and dolphins are the only species that have sex for pleasure.
 96.The average person falls asleep in seven minutes.
 97.During your lifetime, you'll eat about 60,000 pounds of food, that's the
weight of about 6 elephants!
 98.In space, astronauts cannot cry, because there is no gravity, so the tears
can't flow!
 99.Your ribs move about 5 million times a year, every time you breathe!
 100.Most dust particles in your house are made from dead skin!
 101.A hard working adult sweats up to 4 gallons per day. Most of the sweat
evaporates before a person realizes it's there.
 102.At birth we have over 300 bones. As we grow up, some of the bones
begin to fuse together as a result an adult has only 206 bones.
 103.The human hand has 27 bones
 104.The femur/thigh bone is the longest bone in our body, it is about a
quarter of ones height.
 105.The human body has 230 movable and semi- movable joints
 106.Our Brain has over 100 billion nerve cells.
 107.The human skull is made up of 29 different bones.
 108.A newborn baby's brain grows almost 3 times during the first year of
life
 109.The left side of human brain controls the right side of the body and the
right side of the brain controls the left side of the body.
 110.The length of human blood vessel is such that it circles the globe 2 ½
times.
 111.The human heart beats 30 million times a year.
 112.80 hairs are likely to fall every day.
 113.The muscles of the eye move more than 100,000 times a day
 114.We breathe 13 pints of air every minute
 115.Human skin has a tendency to shed 40 pounds of skin in lifetime
 .116.Human kidneys have about 1 million nephrons that filters out liquids
and wastes.
 117.Our heart beats around 100,00 times every day.
 118.Human blood is on a 60,000mile journey.
 119.Fingernails contain keratin and they seem to be strongest component
in the human body.
 120.The human skin contains 45 miles of nerves.
 121.Most people blink about 25 times per minute.
 122.For every 2 weeks, the human stomach produces new layer of mucous
lining, otherwise the stomach will digest itself.
 123.An average of 17 muscles contracts for a smile.
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124.Every person has a unique tongue print.
125.A sneeze moves out of our mouth at a speed of 100 meters per hour.
126.An average human eye blinks about 6,205, 000 times
.127.The tooth is the only part of the human body that cannot heal and
repair by its own
128.In one square inch of skin there are 4 yards of nerve fibers.
129.The human eye has the ability to distinguish about 1 million color
surfaces.
130.A square inch of skin has 100 sweat glands.
131.The human ear can distinguish between hundreds of thousands of
different sounds.
132.On an average the human scalp has about 100,000 hairs.
133.Nails of toes or fingers take about 6 months to grow from base to tip.
134.A square inch of skin consists of 1300 nerve cells.
135.On an average an individual produces human being consumes about
500 kg of food per year.
136.The adult human brain is about 2 % of total body weight.
137.On an average 1.7 liters of saliva produces each day.
138.In one square inch of skin, there are 3 million cells
139.The human body consists of over 600 muscles.
140.As we get older, the brain loses almost one gram per year.
141 .Oesophagus/or food pipe, which is the passage for the food we eat to
the stomach, is approximately 25 cm long.
142.A square inch of skin consists of three yards of blood vessel.
143.There are about 13, 500,00 neurons in the human spinal cord
144.The human tongue has 10,000 taste buds.
145.The cells of taste buds are constantly being renewed, roughly on every
ten hours.
146.An average human head weighs about 8 pounds.
147.Our eyes are always the same size from birth, unlike our nose and ears.
148.The human body is composed of 80 percent of water.
 149.The human eyeball is 24.5 mm long.
 150.The total weight of skin in an average human adult is 61 pounds.
 151.Taste buds are present inside the mouth and also at the roof of the
mouth.
 152.The human spinal cord is 45 cm long in men and 43 cm long in women.
 153.The weight of human cerebellum is 150g.
 154.The strongest muscles of the human body are masseters, which are
present on either side of the mouth.
 155.The human liver performs 500 different functions.
 156.The heart muscles will stop working only when we die.
 157.Children have more sensitive ears than adults.
 158.Shivering is a way of trying to keep our body warm.
 159.Humans have the ability to distinguish 4,000 to 10, 000 smells.
 160.Every hour, the human eye can process 36,000 bits of information.
 161 Nails and corneas are the only two tissues in the body that do not
receive oxygen from blood.
 162.The length of the finger indicates how fast the nail grows. The nail of
the middle finger grows faster than others.
 163.The human ears can hear in the frequency of 1,000 to 50, 000 hertz.
 164.The total surface area of the human brain is about 25, 000 square cms.
 165.When the sounds are above 130 decibels, it causes pain to the ears.
 166.There are around 100 receptors in each of our fingertips
 167.The weight of skin in a human adult is 4 to 5 kg.
 168.The middle part of the back is the least sensitive part of our body.
 169.Children have better sense of smell than adults.
 170.The eyelashes shed by a human in his entire life is of 30 m of length
 171.After death, the body starts to dry out creating an illusion that the nails
and hairs are growing even after death.
 172.The surface of human skin is 6.5 square feet.
 173.Every second, 15 million blood cells are destroyed in the human body
 174.An average human being will breathe about 23,040 times per hour.
 175.The base of the spinal cord has a cluster of nerves, which are most
sensitive
 176.The surface area of the human lung is equal to that of a tennis court.
 177.When we reach 60 years of life, we lose 50 % of our taste buds.
 178.Blinking of one eye causes movement of 200 muscles.
 179.Platelets, which are one of the constituents of the blood is produced at
the rate of 200 billion per day.
 180.The sense of taste is the weakest of the five senses.
 181.Humans have the ability to differentiate about 10, 000 odor.
 182.It takes time for the newborn baby to learn to turn the pictures right
side up, as it sees the world upside down in the beginning.
 183.If human sense of smell is affected, sense of taste is also affected as
the brain interprets signals from the nose and tongue.
 184.There are around 1,200,000 optic fibers in the human eye.
 185.The lens of the human eye is composed of 65 % of water and 3 % of
protein.
 186.We shut our eyes for 0.3 seconds, when we blink.
 187.Color blind people find it hard to distinguish colors like green and red.
 188.A blink of an eye lasts for 1/10th of a second.
 189.Eyes are the only part of the human body that functions at 100 percent
ability at any movement.
 190.The human skin contains 280,000 heat receptors.
 191.A drop of blood contains 250 million cells.
 192.The liver is the largest and heaviest internal organ of the body and
weighs about 1.6 kilos.
 193.In the womb, the baby's body is covered by a thin layer of hair but as
soon as the baby is born it disappears.
 194.At birth everyone is color blind.
 195.Babies crawl to an average of 200 m a day.
 196.The only joint less bone in the human body is the hyoid bone, which is
present in the throat area.
 197.A baby gender is determined after the first 6-8 weeks of pregnancy.
 198.Eating Break fast helps to burn 5 to 20 percent of calories throughout
the day.
 199.The surface of human tongue is covered with 100 of tiny structures
called papillae.
 200.On an average, a person's left hand does 56 % of typing.
 On an average the cough that comes out of our mouth is 60 m per hour.
 202.A person can live without Food for about a month, but only a week
without water
 .203.Threshold pain of women is 9 times stronger than men.
 204.The palms of the hands and soles of the feet contain more sweat
glands than other parts of the body.
 205.10 % of men and 8 % of women are left-handed.
 206.On an average the human body contains enough water to fill 1 gallon
of a tank.
 207.An average human body contains enough amount of fat to make seven
bars of soap.
 208.The human body releases growth hormones during sleep.
 209.Red blood cells are about seven micrometer in diameter.
 210.The thighbone is so strong that it withstands the axial load of about
1600-1800 kilos.
 211.An average adult male brain weighs about 1375 grams
 .212.On an average the weight of an adult female brain is about 1275
grams.
 213.Only four percent of the brains cells work and the remaining cells are
kept in reserve.
 214.On an average thousands of neurons dies every day.
 215.The human eye has 110-130 million receptors to perceive light
 216.The human eye contains five to seven million receptors for color
perception
 217.The human eye cannot perceive a motionless image
 218.The average life span of a sperm is about 36 hours.
 219.The life span of an ovule is about 12 - 24 hours.
 220.Only one person in two billion will live for more than 115 years of life.
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221.On an average, we speak about 5,000 words per day.
222.Intelligent people have more zinc and copper in their hair
223.Liver is the only organ of the body, which regenerates itself completely
even after being removed completely.
224.The human heart pumps 6,000 liters of blood daily through a man
lifetime.
225.The human brain is capable of creating more ideas equivalent to that of
the atoms of the universe
226.Hair is the fastest growing tissue in the body, the next being bone
marrow.
227.On an average, in an adult scalp 35m of hair fiber is produced every
day.
228.An average scalp has 100,000 hairs.
229.The maximum length of hair can be 70 to 90 cms.
230.The life span of hair is two to seven years.
231.Frequent washing of hair does not cause hair loss.
232.Brain uses 20 % of our body energy and makes up only 2 % of our body
weight.
233.Any damage to brain cells cannot be repaired completely.
234.Human brain stops growing at the age of 18.
235.Male hairs are denser and grow faster than females.
236.Depending on the area of the human body, the thickness of the skin
varies from ½ to 6 mm.
237.Tongue is the strongest muscle in the human body.
238.A Pair of feet contains about 250,000 sweat glands.
239.The human skin sheds and re-grows after every 27 days.
.One in every 2000 babies is born with a tooth.
 242.Pregnancy in women lasts on average of about 270 days from the time
of conception till birth.
 243.Sneezing too hard can cause rib fracture and suppressing the sneeze
can cause damage to the blood vessels of head or neck.
 244.On freeze drying, 10 % of body weight is contributed by the micro
organisms of our body.
 245.About 80 % of ultra- violet rays from the sun can get through the cloud
and can cause sunburn or tan even on a cloudy day.
 246.The human stomach contains about 35 million small digestive glands.
 247.The ovaries of a female contain about 600,000 immature eggs at birth.
 248.The human body has 4 million pain sensitive structures.
 249.Each lung contains 300-350 million respiratory units called alveoli.
 250.Human blood contains 22,000 million cells.
 251.Human skin is renewed itself every 5 weeks.
 252.A New stomach lining is formed every five days.
 253.A human ear contains about 24,000 fibers in it.
 254.The largest cell in the woman is the egg or ovum present that is
released from the ovaries.
 255.Women burn fat more slowly than men.
 256.The leg bone is the fastest growing bone in the human body.
 257.There are 22 bones in the human skull.
 258.A muscle called the diaphragm controls the human breathing process.
 259.The human brain is made up of more than 10 billion nerve cells and
over 50 billion other cells and weighs about less than three pounds.
 260.2/3 of the human body is made up of water.
 61.Vitamin C and E fights against Dementia - a disease of forgetfulness in
the elderly person.
 262.Half a liter of water per day is lost through breathing.
 263.Drinking coffee prevents Parkinson's disease.
 264.Cold weather improves human memory and concentration.
 265.Most of the bones in the human body constitutes about 3/4 of water.
 266.An adult human body contains five to six quarts of blood and an infant
has about one quart of blood.
 267.Blind people understand spoken words quicker than sighted people.
 268.A human lung contains about 700 million alveoli.
 269.Vitamin E protects the brain cells from damage caused by alcohol
consumption.
 270.The human body contains more bacteria than the number of cells
present in it.
 271.The longest muscle in the human body is sartorius, which is present in
the hip region and it is commonly called as tailors muscle.
 272.Melanin, a pigment present in the skin is responsible for the color of
the skin in a person.
 273.Except the heart and lungs, all other parts of the body receive their
blood supply from the largest artery of the body, the aorta.
 274.The Pulmonary vein is the only vein in the human body that carries
oxygenated blood while all the other veins of the body carry de-oxygenated
blood.
 275.The human blood is colorless. It is the hemoglobin; a pigment present
in the red blood cells is responsible for the red color of the blood.
 276.The smallest muscle in the human body is the stapedius, which is
present deep inside the ear
 277.The human brain is very soft like that of butter.
 278.A heartbeat is nothing but the sound produced by the closure of valves
of the heart when the blood is pushed through its chamber.
 279.Hold out your hand and make a fist. If you are a kid, the size of your
heart is same as the size of your fist and if you are an adult it is about the
same size as twice as your fist.
 280.About 500 million sperm mature every day in a normal male adult.
281.Sixty percent of the human body nerve ends in the forehead and the
hands.
 282.A human body contains about 200,000 temperature detectors
 283.A human body has 500,000 touch detectors.
 284.If all the alveoli from both lungs were spread flat they would cover an
area nearly the size of a tennis court.
 285.Each human eye contains 130 million light receptors.
 286.The human scalp contains about 100,000 hair follicles, from which the
hair grows
 .287.The human skeleton renews once in every three months.
 288.The human skin cells multiply every second to replace the worn ones.
 289.The cells of the heart and brain do not multiply through out their
lifetime.
 290.The whole leg constitutes of 31 bones.
 291.The human skull and upper jaw consist of 21 bones.
 292.When we see an image, the human eye captures the inverted image of
it. It is the brains interpretation that makes us to see the upside down
captured image in to a normal erect image.
 293.An average person laughs about 15 times a day.
 294.A womens heart beats faster than a mens.
 295.The average person is about a quarter of an inch taller at night.
 296.The food will get in to the stomach even if one stands on their head.
 297.The eyes have the fastest reacting muscle in the whole body. It
contracts in 1/100th of a second.
 298.Almost every seven years, the human body replaces the equivalent of
an entirely new skeleton.
 299.Laughing and coughing creates more pressure on the spine than
walking or standing
 .300.The human heart continues to beat even though it is taken out of the
body or cut in to pieces.
301.On an average, the human blood circulates the body for every 23
seconds.
 302.In an average person, it takes 8 seconds for food to travel down the
food pipe,3-5 hours in small intestine and 3-4 days in large intestine.
 303.The brain continues to send out electric wave signals until
approximately 37 hours after death.
 304.People under 30 years of age take in double the amount of oxygen as
people over 80 years of age.
 305.The human body takes 6 hours to digest a high fat meal and it takes 2
hours for a carbohydrate meal.
 306.On an average an adults heart pumps about 4,000 gallons of blood
each day.
 307.The muscles of our body constitute 40% of our body weight.
 308.Iris is the part of the eye that determines the color of the eye.
 309.Red Blood Cells comprise about 40 % of blood volume.
 310.The human eye contains structures called Rods and cones. Rods
register the shapes of images and respond to low levels of light and Cones
responds to bright lights and registers the color of images.
 311.We tend to get cold very easily in the winter season because we are
indoors and in close proximity to each other.
 312.Our Muscles often work in pairs so that they can pull in different or
opposite directions.
 313.The left side of the human heart is much thicker and stronger than the
right side
 314.Human blood is a make up of Red Blood Cells carrying oxygen, White
Blood Cells that fight disease, Platelets that help the blood to clot and a
liquid called plasma
 .315.Human hair is made up of a body protein called keratin and it grows
out of an opening of the skin called Follicle.
 316.Every day 440 Gallons of blood flows through the kidney.
 317.Red Blood Cells lasts only for about 4 months before they wear out.
 318.Every minute 30,000 to 40, 000 dead skin cells fall from our body.
 319.Straight hair lies flat because it is round and grows out of round
follicles.
 320.Curly hair comes out of an oval follicle.
 321.Goose bumps on our skin are caused by pull of muscles attached to
hair follicles and make the hair upright.
 322.The color of our hair is also determined by the melanin, a pigment
present in the human body.
 323.The human adult heart pumps about 4,000 gallons of blood each day.
 324.The human body contains 30 amazing hormones, which regulates
activities like sleep, body temperature, hunger, and managing stress in
times of crisis and so on.
 325.A person growth like being tall or short is not determined only by the
genes. Growth hormone also is responsible for it.
 326.Red Blood Cells constitutes about 40 % of the blood.
 327.The human body makes 2.5 million Red Blood Cells every second or
about 200 billion Red Blood Cells every day.
 328.Arterial blood contains a lot of oxygen and nutrients for the body
whereas venous blood contains low oxygen level and nutrients.
 329.Red Blood Cells are the only cells in the body that do not have a
nucleus.
 330.If the blood vessels were laid from end to end, they would reach
around the world four times.
 331.On an average, the human growth hormone, which is responsible for a
person growth is produced at the rate of 500 microgram per day at the age
of twenty, 200 microgram per day at the age of forty and 25 microgram per
day at the age of eighty.
 332.It is estimated that there are over 1, 000,000,000,000,000 connections
in the human brain.
 333.Human brain constitutes 60 % of white matter and 40 % of grey
matter.334.The average length of the human brain is about 167 mm and its
average height is 93mm.
 335.A human heart pumps about 1,314,000 gallons of blood a year through
its blood vessels.
 336.There are about 30 - 40 billion white blood cells present in our body to
fight against infective and foreign organisms.
 337.The human bladder can stretch to hold about 400ml of urine.
 338.All the blood in our body passes 400 times through each kidney per
day.
 339.The human Liver consists of 100,000 tiny clusters called lobules.
 340.On an average, the human stomach holds about 2 liters of contents.
 341.We produce 1 liter of saliva per day.
 342.The human sense of smell has the ability to identify the chemical smell
of an object in one part per trillion of air.
 343.An average capillary is only 1mm.
 344.Humans have about 2 to 3 million sweat glands, which can produce up
to 13 liters of sweat on a hot day.
 345.On an average, 100, 000 to 1000, 000 chemical reactions takes place in
our brain
 .346.1,000,000,000,000 nerve cells are present in each and every person
head.347.Liver cells take several years to replace themselves.
 348.The white part of our fingernail is called as Lunula.
 349.We are more likely to catch cold from a person by shaking his hand
than from his sneeze.
 350.The shoulder blade is connected to the body by means of 15 different
muscles and it is not attached to a single bone.
 351.The human brain uses 20 % of one blood and oxygen.
 352.A healthy liver processes 720 liters of blood per day.
 353.Plaque begins to form 6 hours after brushing our teeth.
 354.59, 951 miles of blood vessels are present in our body.
 355.Newborns will cry out without tears for the first three to six weeks.
 356.The Nervous system transmits messages to the brain at the speed of
180 miles per hour.
 357.The human nose can remember 50,000 different smells.
 358.There is enough iron in the human body to make a small nail.
 359.Women have better sense of smell than men
 360.It is evaluated that the human eye can detect over 10,000,000 different
colors.
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361 The wax present inside the ear is made up of oil and sweat.
362.The female body is capable of giving birth to 35 children in one
lifetime.
363.The spinal cord, which controls over 10 billion nerve cells, is less than
two feet in length and its diameter is same as that of the index finger.
364.In the middle of the day, our eyesight will be sharper.
365.A newborn baby has more than 26 billion cells.
366.Sneezing clears dirt from the nose.
367.Inner ear is the main organ of balance.
368.Yawning brings more oxygen to the lungs.
369.Coughing clears mucous secretion from the throat.
370.Human speech is produced by the interaction of 72 muscles.
371.A New born baby loses about half of its nerve cells before it is born.
372.A neglected child brain can be substantially smaller than that of a
healthy child.
373.On an average, the number of connections in the brain increases from
50 trillion to 1 quadrillion in a newborn during his first month of life.
374.On an average it takes about 13 days for a grey hair to grow.
375.Healthy human hair emits sound.
376.The human brain stores memories of fear.
377.The nerve cells present in the nose, allows us to smell and regenerates
throughout one's life.
378.Reading aloud to children helps to stimulate brain development.
379.A hair grows by 0.3 to 0.5 mm per day, 1 to 1.5 cm per month and 12 to
15 cm per year.
380.Children lose an average of 90 hairs per day, which increases to 120 by
old age.
381.A Childs ability to learn can increase or decrease by 25 % or more
depending on whether the child grows up in a stimulating environment.
 382.On an average a persons head has 100, 000 to 150, 000 hair.
 383.A single hair has the ability to support up to 100 grams of weight and
the whole hair has the ability to support up to 12 tons of weight.
 384.The pigment of human hair is produced in the shaft of hair beneath the
skin.
 385.In lifetime, the human heart pumps about 1 million barrels of blood,
which is enough to fill more than three tankers.
 386.The width of an average human brain is 140 mm.
 387.It takes 5- 30 seconds to chew food.
 388.Swallowing of the food takes about 10 seconds.
 389.The enzyme in the stomach that breaks down alcohol is produced less
in men than women
 390.In a year on an average person sleeps for 122 days out of 365 days.
 391.There are around 9,000 taste buds present on the tongue.
 392.Capillaries are so small that it would take ten of them to equal the
thickness of a human hair.
 393.It is impossible to tickle our selves.
 394.In a human body, the small intestine is 21 feet and the large intestine is
6 feet long.
 395.For every 24 hours, in a healthy adult, more than a gallon of water
containing over an ounce of salt is absorbed from the intestine.
 396.The right side of the human brain is responsible for self-recognition.
 397.Men listen with the left side of the brain and women use both sides of
the brain.
 398.In a lifetime, the human kidneys clean over 1 million gallons of blood.
 399.Identical twins have identical DNA but not identical fingerprints.
 400.Babies recognize sounds while in mother's womb.
401.Human bone is as strong as steel but 50 times lighter
 402.Bones make up only 14% of our weigh
 t403.The brain is faster than a super computer processing billions of signals
per second.
 404.Seven out of ten people cross their left arm over their right
 405.Your foot contains 25% of all the bones within your body.
 406.Human eye is the only multifocal lens in the world which can adjust in
2 milliseconds
 407.Human brain is the most powerful computer which has the processing
speed of 3000+ Ghz
 408.The gastric acid in your stomach is so powerful that it is able to eat
away an iron table in about 5 minutes.
 409.sperm containing the xy chromosomes to become a male can swim
faster but not for as long as the female xx chromosomes.
 410.The ears never stop growing through lifetime.
 411.The heart is actually more in the middle, just off to the left.
 412.Do you know every human spent about half an hour as a single cell
 Babies' eyes do not produce tears until the baby is approximately six to
eight weeks old.
 The reason why your nose gets runny when you are crying is because the
tears from the eyes drain into the nose.