The Link Between Obesity and Cancer
In 2003, the New England Journal of Medicine published the results of a study that included more than 900,000 American adults. Researchers followed the healthy study participants for 16 years, and found the heaviest participants were more likely to develop and die from cancer than participants who were at a healthy weight.
Source: http://www.cnn.com/2014/10/01/health/obesity-cancer-asco/index.html