4.2 Healthy Weight

This concept consists of three videos discussing healthy eating habits. Each video link is followed by a set of questions related to the video. Read the questions prior to watching the video. Think about the questions as you watch the video, and/or answer the questions after watching the video.

What's a Healthy Weight?

The first video discusses the meaning of a healthy weight: http://www.youtube.com/watch?v=ivIljQNAwKs (7:08).

(At the 6:27 mark of the video, the term "cardiac output" should be replaced by "caloric output").

1. What does the term "healthy weight" mean?
2. What determines the healthy weight of an individual?
3. What is a person's metabolic rate?
4. What is the BMI?
5. What is meant by energy balance?
6. What is a balanced diet?
7. Why is skipping meals not a good idea?
8. What is a BMR?
9. How is caloric output increased?

Associated CK-12 Life Science Concept

• Choosing Healthy Foods: /life-science/Choosing-Healthy-Foods-in-Life-Science/lesson/Choosing-Healthy-Foods/

Associated Link

• What's your BMI?: http://fit.webmd.com/teen/bmi/calc-bmi

Diet and Obesity

The second video discusses a balanced diet and the effects of an unbalanced diet: http://www.youtube.com/watch?v=wfUbIpzJK4c (3:43).

1. What is the key to a good diet?
2. What is missing from a purely vegetarian diet?
3. Why do people become overweight or obese?
4. What is meant by "lifestyle changes?"

Associated CK-12 Life Science Concept

• Choosing Healthy Foods: /life-science/Choosing-Healthy-Foods-in-Life-Science/lesson/Choosing-Healthy-Foods/

Eating Disorders

The third video is an overview of eating disorders: http://www.youtube.com/watch?v=GKcO93zBVwQ (6:17).

1. What causes eating disorders?
2. Why is important to get help if you have an eating disorder?
3. What is anorexia nervosa?
4. What is bulimia?
5. What is binge eating disorder?
6. How does body image influence eating?

Associated CK-12 Biology Concept

• Balanced Eating: /biology/Balanced-Eating/lesson/Balanced-Eating/

Vocabulary

• balanced eating: A way of eating that promotes good health.

• body mass index (BMI): An estimate of the fat content of the body.

• eating disorder: Mental illness in which people feel compelled to eat in a way that causes physical, mental, and emotional health problems.

• metabolism: The sum of all the biochemical reactions in an organism.

• MyPlate: Visual guideline for balanced eating; replaced MyPyramid in 2011.

• obesity: A condition in which the body mass index is 30.0 kg/m² or greater.

Summary

• Maintaining a healthy weight is important for a healthy lifestyle.
• Healthy weights vary for each individual, and are based on a number of factors.
• Obesity may result from a high caloric intake with little or no physical activity.
• Eating disorders can be very unhealthy.
• People with an eating disorder need professional help.

Review

1. What is healthy weight?
2. How is a healthy weight maintained?
3. What is an eating disorder?
4. What causes eating disorders?