According to the World Cancer Research Fund, about 20 percent of all cancers among Americans are related to being overweight and obese. Some cancers are also caused by poor nutrition, excessive alcohol production, and a sedentary lifestyle.
One article (1) discussed the role that obesity plays in the risk of cancer. It indicated that obesity seems to have the strongest relationship to the development of cancer. In fact, it noted that obesity contributes to approximately 20 percent of cancer-related mortalities.
The article went on to say that being obese is closely connected to an increased risk of many types of cancer, including pancreatic cancer, renal cancer, esophageal cancer, endometrial cancer, colon cancer, and breast cancer. There is a lesser association between cancers of the prostate, ovaries, cervix, non-Hodgkin lymphoma, liver, and gallbladder.
Source: 1.Does body weight affect cancer risk? http://www.cancer.org/cancer/cancercauses/dietandphysicalactivity/bodyweightandcancerrisk/body-weight-and-cancer-risk-effects. Accessed 7/26/16.
Dr. Adem Gunes