Weight Management
Overweight
and
Underweight
http://www.youtube.com/watch?v=39mPtTCwq00&feature=related
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Increasing prevalence of
obesity (BMI of 30 or
greater) among U.S. adults
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Fat Cell Development
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Fat Cell Metabolism
• REM: Lipoprotein lipase (LPL)?
• Set-point theory
• Hyperplastic obesity (number)
• Hypertrophic obesity (size)
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Causes of Obesity
• Genetics
–Leptin
–Ghrelin
–PYY
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Causes of Obesity
• Genetics
–Uncoupling proteins
•White body fat
•Brown body fat
Causes of Obesity
• Environment
–Gene pool
–Overeating
–Physical inactivity
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Health Risks
• Overweight in good health
• Obese or overweight with risk
factors
• Obese or overweight with lifethreatening-condition
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Perceptions
And Prejudices
• Social consequences
• Psychological problems
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The
Psychology
of Weight
Cycling
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Dangerous
Interventions
• Herbal products and dietary
supplements
–St. John’s wort
•Serotonin
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Dangerous
Interventions
• Other gimmicks
–Cellulite
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Aggressive
Treatments
Of Obesity
• Clinically severe obesity
• Drugs
–Sibutramine-supresses appetite
• Also called Merida
–Orlistat-inhibits absorption of fat
• Also called Xenical
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Surgical Procedures
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Weight-Loss Strategies
• Reasonable goals vs. expectations
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Weight-Loss
Strategies
• Eating plans
– Be realistic about energy intake
– Emphasize nutritional adequacy
– Eat small portions
– Lower energy density
– Remember water
– Focus on complex carbohydrates
– Choose fats sensibly
– Watch for empty kcalories
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Weight-Loss Strategies
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Weight-Loss Strategies
• Food guide
pyramid for a
1600-kcalorie
diet
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Energy Density
• Selecting grapes with their high
water content instead of raisins
increases the volume and
decreases the energy intake
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Energy Density
• Even at the same weight and similar
serving sizes, the fiber-rich broccoli
delivers twice the fiber of the potatoes for
about one-fourth the energy.
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Energy Density
• By selecting the low-fat version, a person
can enjoy the same amount of tuna for
fewer calories.
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Energy Density
Copyright 2005 Wadsworth Group, a division of Thomson Learning
Weight-Loss
Strategies
• Physical activity
– Activity and energy expenditure
– Activity and metabolism
– Activity and body composition
– Activity and appetite control
– Activity and psychological benefits
– Choosing activities
– Spot reducing
Weight-Loss
Strategies
• Behavior and attitude
– Behavior modification
– Become aware of behaviors
– Change behaviors
– Personal attitude
– Support groups