CHAPTER 22 OBESITY
CHAPTER 22 OBESITY
Intro 。 Calorie deprivation(in moderation)can make you healthier Cuba after the collapse of the USSR The starvation experiment at the University of Minnesota during WWll Obesity is a growing problem in the US and worldwide Why?What is causing this epidemic? Is it a public health crisis? What government responses are appropriate? Bhattacharya,Hyde and Tu-HealthEconomics
Bhattacharya, Hyde and Tu – Health Economics Intro • Calorie deprivation (in moderation) can make you healthier • Cuba after the collapse of the USSR • The starvation experiment at the University of Minnesota during WWII • Obesity is a growing problem in the US and worldwide • Why? What is causing this epidemic? • Is it a public health crisis? • What government responses are appropriate?
THE WIDESPREAD RISE IN OBESITY Ch 22 Obesity
Ch 22 | Obesity THE WIDESPREAD RISE IN OBESITY
When is a person obese? Q:Is a man who weighs 180 pounds obese? A:That depends whether the person is five feet tall or seven. Clearly,some accountingmust be made for height in defining obesity. 。 The canonical way to do this is calculate the body mass index or BMI: Definition 22.1 Body Mass Index:BMI=- Weight in kilograms =4.9× Weight in pounds (Height in meters)2 (Height in feet)2 A person is considered clinically obese if his or her BMI is 30 or greater. Bhattacharya,Hyde and Tu-HealthEconomics
Bhattacharya, Hyde and Tu – Health Economics When is a person obese? • Q: Is a man who weighs 180 pounds obese? • A: That depends whether the person is five feet tall or seven. • Clearly, some accounting must be made for height in defining obesity. • The canonical way to do this is calculate the body mass index or BMI: • A person is considered clinically obese if his or her BMI is 30 or greater
Obesity rates are rising 。 Body weight in the U.S.has been rising in fits and starts for at least the past 150 years. The proportion of adult Americans who are obese has more than doubled between 1977 and 2006. Body weight has been increasing for decades in every developed country in the world. The heaviest countries are all in the Anglosphere. Bhattacharya,Hyde and Tu-HealthEconomics
Bhattacharya, Hyde and Tu – Health Economics Obesity rates are rising • Body weight in the U.S. has been rising in fits and starts for at least the past 150 years. • The proportion of adult Americans who are obese has more than doubled between 1977 and 2006. • Body weight has been increasing for decades in every developed country in the world. • The heaviest countries are all in the Anglosphere