Eating disorders

Chapter 8 Lecture
Your Weight
© 2015 Pearson Education, Inc.
Learning Outcomes
• Explain why obesity is both a worldwide trend
and a serious concern in America.
• Discuss four effects of body weight on wellness.
• List reasons why some diets work but most fail.
• Describe three major eating disorders.
• Define metabolic rate, set point, and energy
balance, and relate them to body weight and
weight maintenance.
© 2015 Pearson Education, Inc.
Learning Outcomes continued
• Choose a realistic target weight based on your
metabolic rate, activity level, eating habits, and
• Create a behavior change plan for long-term
weight management, and list several effective
tips that can help with weight management.
© 2015 Pearson Education, Inc.
Weight Management Concepts
• Overweight
– Having a BMI of 25 to 29, or having a body
weight more than 10% above recommended
• Obese
– Having a BMI of 30 or more, or having a body
weight more than 20% above recommended
• Underweight
– Having a BMI below 18.5, or having a body
weight at least 10% less than recommended
© 2015 Pearson Education, Inc.
Key Points in Weight Management
• Successful changes to diet and exercise cannot
be short-term fixes.
• Your overall percentage of body fat is more
important than your weight or weight loss.
• "Healthy weight loss" means slow, sustained
loss of fat.
• Energy balance is achieved when long-term
weight management balances calories
consumed with calories expended.
© 2015 Pearson Education, Inc.
Why Is Obesity on the Rise?
• Worldwide trend:
– "Globesity" is reaching epidemic rates due to
diets high in processed fats, meats, sugars,
and refined starches, combined with more
sedentary lifestyles.
• Energy imbalance is common in America due to:
– Overconsumption
– Too little exercise
– Hereditary factors
– Limited non-exercise activity, such the activity
described in the human "fidget factor"
– Demographic and lifestyle factors
© 2015 Pearson Education, Inc.
The Rise of Obesity: Men
© 2015 Pearson Education, Inc.
The Rise of Obesity: Women
© 2015 Pearson Education, Inc.
Obesity Rates for Children on the Rise
© 2015 Pearson Education, Inc.
Changes in Obesity Rates across America
© 2015 Pearson Education, Inc.
Changes in Portion Size
© 2015 Pearson Education, Inc.
How Body Weight Affects Wellness
• High BMI and abdominal fat are associated with
higher chronic disease risk.
• Body weight:
– Can promote or diminish fitness
– Can have social consequences
– Can influence risks for chronic diseases
– Affects life expectancy
• Metabolic syndrome:
– Condition marked by high blood pressure,
cholesterol, and abdominal fat deposits,
along with insulin resistance
© 2015 Pearson Education, Inc.
Body Weight and the Risks for Chronic
© 2015 Pearson Education, Inc.
Fitness and Mortality Rates
© 2015 Pearson Education, Inc.
Why Most Diets Don't Succeed
• Diets often lead to weight cycling (repeatedly
losing and then gaining back weight).
– Yo-yo dieting refers to following a series of
diets and gaining back the weight lost on each.
– Rigid diets are restrictive, unpleasant, and
– Flexible diets tend to be more effective and
better at encouraging changes in long-term
eating habits.
• Our bodies produce powerful appetite stimulants.
• Most diet products and plans are ineffective.
© 2015 Pearson Education, Inc.
Weight Cycling Example: Kirstie Alley
© 2015 Pearson Education, Inc.
Best Diet Plan
1. Why do you think the Weight Watchers
program has been so successful? What role
does social support play in the program?
2. What are some recommendations or strategies
for those who want to lose weight but cannot
afford Weight Watchers?
© 2015 Pearson Education, Inc.
What Are Eating Disorders?
• Disordered eating is abnormal consumption of
food that diminishes wellness but usually doesn't
last a long time.
• Eating disorders are disturbed patterns of eating
that result in serious medical problems and are
long lasting.
• Body dysmorphic disorder is a psychological
syndrome in which a person becomes obsessed
with a perceived physical defect.
© 2015 Pearson Education, Inc.
What Are Eating Disorders? continued
• Three common eating disorders:
– Anorexia nervosa
– Bulimia nervosa
– Binge eating disorder (BED)
• Eating disorders have distinctive symptoms and
identifiable features.
• Eating disorders can be effectively treated
through medical and psychological therapies.
© 2015 Pearson Education, Inc.
EDNOS: A Dangerous Eating
1. Discuss the signs and symptoms of
2. Discuss types of treatment used to treat
3. What are your reactions to the method of
having the women in the treatment clinic eat
foods that may not be the healthiest (i.e., pizza,
Chinese food)? In your opinion, is this the best
method of treatment? Why or why not?
© 2015 Pearson Education, Inc.
Thinking Patterns Associated with Healthy
and Disordered Eating
© 2015 Pearson Education, Inc.
Anorexia Nervosa: Severe Weight Loss
© 2015 Pearson Education, Inc.
Key Concepts in Achieving Weight Goals
• Recognize the role of metabolic rate:
– Basal metabolic rate (BMR)
– Resting metabolic rate (RMR)
• Recognize your body's set point—a
preprogrammed weight that your body returns to
easily when you gain or lose small amounts of
• Balance your energy equation—or to lose or
gain weight, "unbalance" that equation.
© 2015 Pearson Education, Inc.
Balance Your Energy Equation
© 2015 Pearson Education, Inc.
Keeping It Off
1. Discuss the practical methods used for
keeping weight off.
2. Discuss psychological factors or contributors
for the inability to maintain weight loss.
3. What tips would you give someone who wanted
to lose weight safely and to maintain weight
© 2015 Pearson Education, Inc.
How Can I Create a Behavior Change Plan
for Weight Management?
• Assess your current weight and choose a
realistic goal.
• Contemplate weight management.
• Prepare for better weight management:
– Think about your beliefs and attitudes.
– Consider your goals.
– Identify your barriers to change.
– Visualize new behaviors.
© 2015 Pearson Education, Inc.
How to Determine Your Own BMI
© 2015 Pearson Education, Inc.
How Can I Create a Behavior Change Plan
for Weight Management? continued
• Take action:
– Commit to your goals.
– Set up a system of support.
– Improve your action plan.
• Establish a regular exercise program.
• Achieve weight maintenance.
• Take lessons from successful weight
© 2015 Pearson Education, Inc.
Calories Burned through Activity
© 2015 Pearson Education, Inc.

similar documents