Obesity and Cancer Risk

Obesity is associated with increased risks of the following cancer types, and possibly others as well:
Esophagus
Pancreas
Colon and rectum
Breast (after menopause)
Endometrium (lining of the uterus)
Kidney
Thyroid
Gallbladder
One study, using NCI Surveillance, Epidemiology, and End Results (SEER) data, estimated that in 2007 in the United States, about 34,000 new cases of cancer in men (4 percent) and 50,500 in women (7 percent) were due to obesity. The percentage of cases attributed to obesity varied widely for different cancer types but was as high as 40 percent for some cancers, particularly endometrial cancer and esophageal adenocarcinoma. source : http://www.cancer.gov