3. Limit dairy consumption. Several studies have linked dairy products to prostate cancer, potentially because of their calcium content, while some have suggested consuming dairy might prevent colorectal cancer. The researchers concluded that it is important to weigh those risks and benefits, and that men should limit or avoid dairy if they have a family history of prostate cancer, based on an analysis of 25 separate studies.
In one, the so-called Health Professionals Follow-Up Study, men consuming two milk servings per day were 60 percent more likely to develop prostate cancer than those who drank no milk, potentially by boosting calcium, which can suppress the action of vitamin D. They also noted limiting saturated fat and cholesterol intake from dairy products may decrease cardiovascular-disease risk.
PCRM conclusion: “Limiting or avoiding dairy products may reduce the risk of prostate cancer.”