Developed by the American Cancer Society 2006 Nutrition and Physical Activity Guidelines Advisory Committee and approved by the American Cancer Society National Board of Directors on May 19, 2006.

　　This section is taken from the Complete Guide—Nutrition and Physical Activity for Cancer Prevention.

　　Because people are interested in the relationship that specific foods, nutrients, or lifestyle factors have to specific cancers, research on health behaviors and cancer risk is often reported on the news. No one study, however, provides the last word on any subject, and single news reports may put too much emphasis on what appear to be contradictory or conflicting results. In brief news stories, reporters cannot always put new research findings in their proper context. Therefore, it is rarely, if ever, advisable to change diet or activity levels based on a single study or news report. The following questions and answers address common concerns about diet and physical activity in relation to cancer.