11 cancers associated with obesity, study finds

A study in The BMJ found an association between obesity and 11 cancers, including multiple myeloma, colon cancer, biliary tract system cancer, breast cancer and kidney cancer. UK researchers evaluated 95 meta-analyses and found that the increase in cancer risk for every 5-kg/m2 increase in body mass index ranged from 9% for rectal cancer in male patients to 56% for biliary tract system cancer.