A whopping one third of all annual cancer cases could be prevented through simple lifestyle changes, U.S. and British experts claim in a new report by the World Cancer Research Fund and the American Institute for Cancer Research. Simply eating better, exercising more, and maintaining healthier weights would prevent 34% of all yearly U.S. cancer diagnoses, and even greater percentages of breast and bowel cancers, according to the analysis. Avoiding smoking cuts cancer risks by an additional third, the researchers say
