Cancer rates dropped in the U.S. for the fourth straight year. Even bigger news: Two-third of cancers may be preventable.
The real news in the report was that two-third of cancers may be preventable. That number divides about equally between cancers due to smoking (the overwhelming cause of lung cancer) and cancers linked to obesity and lack of exercise (linked to cancer of the uterus, colon, kidney, pancreas, and breast cancer in post-menopausal women). Only the remaining one-third are linked to genetic mutations from all other causes, including toxins, radiation, environmental influences, etc.