The American Institute for Cancer Research and the World Cancer Research Fund recently published a new comprehensive report on diet, physical activity, and cancer. The report was written by an international panel of researchers who reviewed more than 7,000 large-scale studies, and it included 10 new lifestyle and diet recommendations for cancer prevention. The report found that even small amounts of alcohol and red and processed meats can significantly increase cancer risk, and that no amount of processed meats is completely safe. Every 1.7 ounces of processed meat consumed a day increases the risk of colorectal cancer by 21 percent. The report also found that excess body fat increases the risk of cancer of the colon, kidney, pancreas, esophagus, and uterus, as well as postmenopausal breast cancer.
World Cancer Research Fund/American Institute for Cancer Research. Food, nutrition, physical activity, and the prevention of cancer: a global perspective. Washington DC: AICR, 2007.