In a study published in the American Journal of Epidemiology, researchers looked at the dietary habits of more than 80,000 men over a nine-year period. They found that eating dairy products had no effect prostate cancer. However, they did find low-fat and non-fat milk increased the risk of localized tumors, while it decreased with whole milk.
The study also shows vitamin D and calcium have little or no impact on the risk of prostate cancer.