Is obesity contagious?

Gina Kolata wrote in the NYTimes in the article Study Says Obesity Can Be Contagious in 2007: Obesity can spread from person to person, much like a virus, researchers are reporting today. When a person gains weight, close friends tend to gain weight, too. [...] The answer, the researchers report, was that people were most likely to become obese when a friend became obese. [...] The investigators say their findings can help explain why Americans have become fatter in recent years — each person who became obese was likely to drag some ...Read more