The relationship between body weight and cancer becomes more alarming when we consider just how many people in the United States are overweight or obese. Today, only 1/3 of adults are at a healthy body weight for their height. Another 1/3 are considered “overweight” and the remaining 1/3 are in the “obese” category. (About 17 % of children and adolescents are obese).  These rates are 300% higher than in 1980.)

American Cancer Society