• Try to organize the words below in a concept map based on your prior knowledge of the words.
• Balanced Diet, Calorie, Carbohydrate, Fat,
Mineral, Nutrient, Nutrition, Protein,
Recommended Dietary Allowance, Vitamin

• Nutrition is how the body uses the nutrients supplied to it.
• Food is simply energy for the body.
• Nutrients = chemicals in food = fuel to energize the body
• Must be in balance for optimal energy

• Main role: Build and repair body parts
• Subunits: amino acids
• Facts: Make up tissues
- (bones, muscle,skin)
• Examples: meat, eggs, chicken, nuts,fish, beans
• % in body: Males 20% Females 18%
• % of daily diet: 10%

• Main role in body: 2 nd source of energy
• Subunit: Fatty acids
• Facts: stored if not used
2 types: unsaturated and saturated
Which is actually better for you?
UNSATURATED
• Examples: cooking oils, butter, salad dressings
• % in body: Males 18% Females 30%
• % in diet needed daily : 15%-30%
• Think ?! Why do females have more fat?

• Main role: 1 st energy source for the body
• Subunits: simple sugars
• Facts: turn into fats if eat too many and don’t burn them off
• Examples: breads, fruits, potatoes, cereals, pastas, vegetables
• % in body: 2% for both males and females
• % of diet needed daily: 60%
• When used for energy they are used up quickly

• Main roles:
1. Cools the body
2. Mixes with other chemicals to allow them to dissolve
3. Carries away wastes
Facts: Contains no calories but small amounts of nutrients .
Some foods are up to 90% water
% in the body: Males and females 50-60%
% of daily diet: Should be 20% of liquid intake.
Or about 2-3 Liters of water a day! (8glasses)

• Main role: Growth and tissue repair
• Without enough vitamins, many chemical changes could not take place within cells
• Needed in very small amounts
• Facts: Can be obtained through pills or food
RDA- recommended dietary allowance tells you how much of a vitamin you should have daily
• Too much of a vitamin can be damaging to your health

• 2 Major types of vitamins:
fat-soluble: stored by the body
Examples: A, D, E, K
water-soluble: not stored by body
Examples: B and C
Lack of vitamins give deficiency diseases….

• Main role: Carry out everyday body functions
• Examples: Iron, Calcium, Iodine,
Magnesium, Sodium, Potassium,
Phosphorus
• When very numerous in the body considered a mineral- when it makes up very little in the body- considered trace elements.
Deficiency Diseases also come from a lack of minerals……….

• Deficiency = a shortage of a nutrient that the body needs

• Obtaining the right amount of each nutrient
• 6 Main Food groups:
• 1. Grains/Bread
• 2. Vegetables
• 3. Fruits
• 4. Milk/Dairy
• 5. Meats/Protein
• 6. Fats/Sweets

• Calorie = a measurement of energy in food
• Most calories come from Fats and sugars
• Proteins and Carbs have equal calories per equal mass of food
• Higher caloric foods = more energy
• Lower caloric foods = less energy
• Males 15-18 yrs. Need ~3000 cal/day
• Females 15-18 yrs. Need ~2000 cal/day

• Calories are strictly neutral. Meaning: from an energy viewpoint it doesn't matter whether you eat a healthy 500 calorie meal (eg. meat, potatoes and vegetables) or two 250-calorie candy bars. Both offer
500 calories worth of energy.
• But energy/calories alone will not keep you healthy - the calories you eat must contain sufficient nutrition to maintain your organs and tissue in good health, otherwise your well-being and energy levels will suffer.

• 1. Age
• 2. Weight
• 3. Height
• 4. Amount of physical activity
– Do you think active or inactive people will require more calories?
– ACTIVE PEOPLE!
– The more energy that is need for activity = the more calories that will be needed.
– Excess calories become Fat!!