This article was written by Allison Bland.

Experts agree that diet and nutrition can reduce risk of many diseases, including different types of cancer and chronic disease. A recent update to a 2007 report by the American Institute for Cancer Research/World Cancer Research Fund (AICR/WCRF) concludes that breast cancer deaths can be prevented by physical activity, breast feeding, a healthy diet and other preventative measures. The study is an update to the breast cancer chapter of Food, Nutrition, Physical Activity and the Prevention of Cancer: a Global Perspective [1]. Earlier conclusions were based on data from 873 studies evaluating the relationship between diet, physical activity, obesity and cancer [2]. The 2009 update includes evidence from an additional 81 studies.