copyright © by holt, rinehart and winston. all rights reserved. weight management and eating...

Copyright © by Holt, Rinehart and Winston. All rights reserved.

Weight Management Weight Management andand

Eating BehaviorsEating BehaviorsVIDEOS:VIDEOS:

Eating Disorder IndicatorsEating Disorder IndicatorsEating Disorders DocumentaryEating Disorders Documentary

‘‘Man-orexia’ On The RiseMan-orexia’ On The RiseMale Eating Disorder SurvivorMale Eating Disorder Survivor

Chapter 8


ANSWERS:1. TRUE2. TRUE3. TRUE4. FALSE—a weight

management program includes healthy eating & exercise habits that maintain a healthy weight.

5. TRUE6. TRUE7. FALSE—most food-

borne illnesses are caused by foods that are prepared or eaten at home.


Weight Management Weight Management andand

Eating BehaviorsEating BehaviorsContents

• Section 1 Food and Your Body Weight• Section 2 Maintaining a Healthy Weight• Section 3 Eating Disorders• Section 4 Preventing Food-Related Illnesses

Chapter 8


Section 1Section 1

Food and Your Body Weight

Chapter 8Weight Management and Eating Weight Management and Eating BehaviorsBehaviors


Section 1 Food and Your Body Weight

VOCAB

HUNGER: the body’s need for food.

APPETITE: the desire to eat particular foods.

Chapter 8



Why Do You Eat?

• The amount and type of food you eat depend on many factors, including:

Chapter 8

• The smell and taste of food• Mood• Family, ethnic, and religious traditions• Social occasions• Health concerns• Advertising• Cost and availability



Food Provides Energy (CALORIES)

1. The amount of calories in food depends on the amount of carbohydrates, fats, and proteins.

2. Extra calories that you do not immediately use are stored as glycogen or fat.

3. Breakfast activates your body and brain at the start of the day.

Chapter 8



VOCAB

• BASAL METABOLIC RATE (BMR): the amount of energy your body uses for basic functions (breathing, heartbeat, digestion, etc).

•varies from person to person, depending on:•Age•Weight•Sex•Activity level

Chapter 8



Balancing Energy Intake with Energy Used

• Some body fat is essential for health • 4% of total body weight for males• 10% of total body weight for females

• ENERGY BALANCE: when the food energy you take in equals the energy you use.

• Extra food energy increases the body fat and causes weight gain.

Chapter 8



Being overweight increases the risk of many long-term health problems, including:

Chapter 8

• Heart disease and high blood pressure• Prostate, colon, and breast cancer• Type 2 diabetes• Sleeping problems such as sleep apnea



Overweight and Obesity: A Growing Problem

Obesity: being more than 20% over your recommended weight.

1. More Americans are obese now than ever before.2. Americans today exercise less and eat more foods

high in sugar and fat than in the past.3. Exercise and a healthy diet can help most people

stay in a healthy weight range.

Chapter 8


Section 2Section 2

Maintaining a Healthy Weight



Section 2 Maintaining a Healthy Weight

Bellringer:

What are some popular diets that you have heard of?

Do you think these diets are safe and effective?

Chapter 8



Why Do You Weigh What You Weigh?

• HEREDITY: the passing down of traits from parent to child through DNA.

• Whether you gain or lose weight easily is largely due to heredity.

• CHOICES about…• what you eat, • how much you eat, and• how much you exercise…affect your energy balance and body weight.

Chapter 8



What Is a Healthy Weight For ME?

• BODY COMPOSITION: % body weight from fat

-vs-% body weight from bone and muscle

• Someone can be overweight without being obese, depending on their body composition.

• BODY MASS INDEX (BMI) = index of weight in relation to height that is used to assess healthy body weight.

Chapter 8



A Healthy Weight Management Plan

• Healthy Weight Management: a program of eating and exercise that keep weight at a healthy level.

• Keys to healthy weight management:• eat better (nutrient dense foods)• eat less (portion control)• exercise more (be active)

• The goal is to lose fat, not muscle.

Chapter 8



A Healthy Weight Management Plan

• To lose 1 pound of fat = - 3,500 cal energy balance

• Safe weight loss: 2-3 pounds per week

• >3 lbs / week weight loss is unhealthy and too

calorie-restrictive

Chapter 8



A Healthy Weight Management Plan (cont)

• You can safely gain weight by gradually increasing food intake and by exercising to increase muscle mass (strength and resistance training).

• If you are underweight, consult a doctor to make sure your low weight is not due to an illness or other condition.

Chapter 8



Dangerous Weight-Loss Practices

• Many weight-loss products and programs fail to provide healthy long-term weight management.

Chapter 8

• Fad diets (ignores some nutrient requirements)• Diet pills (unhealthy / dangerous side effects)• Surgery (risk, life-altering change)

• The only safe and reliable way to manage your weight is to balance food intake with exercise.


Section 3Section 3

Eating Disorders



Section 3 Eating Disorders

Bellringer

• Students should close their eyes and consider the following…

• Think about your ideal body image.

• Think about your actual body image.

• How do the two descriptions differ? • Do you think your ideal image is healthy? • Do you think it is healthier than your actual image?

Chapter 8



What Are Eating Disorders?• Body image: how you feel about your appearance

and body.

• Eating disorders:• involve an unhealthy degree of concern about

body weight and shape• may lead to efforts to control weight by

unhealthy means.

• Culture and society: affect what we think of as a perfect body.

Chapter 8



A Closer Look at Eating Disorders

Factors that can contribute to eating disorders:

• Body image • Genetics• Culture• Personality• Emotions• Family

Chapter 8



A Closer Look at Eating Disorders

• If you have concerns about food or your appearance that have led to trouble in school, at home, or with your friends, consult a parent, doctor, or other trusted adult.

• If you think a friend has an eating disorder, tell your friend about your concern, and help him or her to face the problem. Contact an adult if necessary.

Chapter 8


**Signs and Symptoms of Eating Disorders**

Low-calorie dieting that is carried to an extreme?Very low body weight?Preoccupation with body weight? Distorted body image? Frequent use of laxatives? Body is in a constant state of starvation?Binge-purge cycle?Refuses to eat?Low self-esteem?

AA

A+BA+B

BABA

A+B

Section 3 Eating DisordersChapter 8

The following signs and symptoms are characteristic of someone with an eating disorder. Indicate “A” for anorexia, “B” for bulimia, or “A+B” for both.


Section 3 Eating DisordersChapter 8

Anorexia Video(5:48)

Bulimia Video(6:25)


Section 4Section 4

Preventing Food-Related Illnesses



Section 4 Preventing Food-Related Illnesses

Bellringer

• What steps do you take when preparing food?

• Does your list of steps include washing:• your hands?• the cooking surfaces?• the food?• the utensils?

Chapter 8



A. Food and Digestive Problems

1. Heartburn: stomach acid leaking into the esophagus.

Symptoms:• burning in your chest

Caused by:• overeating high-fat or spicy foods• stress and anxiety

Prevention:• avoiding high-fat or spicy foods • reducing stress and anxiety

Chapter 8




2. Ulcers: open sores in the lining of the stomach or intestines.

Symptoms:• They can cause pain after eating

Caused by:• bacterial infections• stress • unhealthy diet

Treatment:• antibiotics

Chapter 8




3. Flatulence: produced by bacteria in the large intestine when you eat certain indigestible foods.

4. Diarrhea: prolonged diarrhea can cause severe and dangerous dehydration.

5. Constipation: can be prevented by exercise, drinking lots of water, and eating a high-fiber diet.

Chapter 8



B. Food Allergies

• Examples: peanuts, shellfish, etc…• an abnormal response to a food • relatively rare• triggered by the body’s immune system• see a doctor if you think you have a food allergy• best way to prevent—avoid foods you’re allergic to• people with serious food allergies may need to carry

epinephrine injections to prevent fatal reactions

Chapter 8



C. Food Intolerances

• conditions that involve bad reactions to food • Differs from true food allergies, in that the immune

system does not attack your own body• Example: Lactose intolerance

•Reduced ability to digest the sugar lactose, which

is found in dairy products. •Treatment and management includes avoiding

dairy intake or using products with the lactase

enzyme added (Lactaid, etc)

Chapter 8



D. Food-Borne Illness

• Examples: salmonella, botulism, etc…

• Caused by eating or drinking something that contains

a toxin or disease-causing organism

• Common symptoms include nausea, vomiting, and

diarrhea

• Often mistaken for stomach flu

• usually can be treated with rest and lots of fluids

• If symptoms are severe (vomiting & diarrhea lasting

more than 2 days) you should see a doctor

Chapter 8



D. Food-Borne Illness

• Prevention:• proper selection, storage, handling, and cooking

of food. •Replace and wash dishcloths frequently•Keep your refrigerator cold enough (~40 F)•Wash hands, utensils, and surfaces with warm,

soapy water between each step•Cook food thoroughly (to recommended

temperatures)

Chapter 8


End of Chapter 8End of Chapter 8

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