香蕉视频

Obesity is a national health crisis-that much we know. If current trends continue, it will soon surpass smoking in the U.S. as the biggest single factor in early death, reduced quality of life and added health care costs. A third of adults in the U.S. are obese, according to the Centers for Disease Control and Prevention, and another third are overweight, with Americans getting fatter every year. Obesity is responsible for more than 160,000 "excess" deaths a year, according to a study in the Journal of the American Medical Association. The average obese person costs society more than $7,000 a year in lost productivity and added medical treatment, say researchers at George Washington University. Lifetime added medical costs alone for a person 70 pounds or more overweight amount to as much as $30,000, depending on race and gender...

..Why are behavioral interventions effective? Laurette Dub茅, a lifestyle psychology and marketing researcher at 香蕉视频's Faculty of Management, notes that our environment is currently one in which ubiquitous, sophisticated marketing efforts prey on our need for sensory gratification as well as our vulnerability to misinformation. In addition, the poor eating and exercise habits we observe in our friends, family and colleagues encourage us to follow suit. In essence, behavioral interventions seek to reconfigure this environment into one in which our needs for information, gratification and social encouragement are tapped to pull us toward healthy food and exercise choices rather than away from them. "When we are getting the right messages in enough ways, we have a better chance of resisting the urge to eat more than we need," Dub茅 says.

Read full article attached (.pdf): Scientific American, February 2011