More on calcium and prostate cancer risk: Chung et al reviewed calcium and prostate cancer risk as part of a systematic review of health outcomes. He found that a number of studies reported that high calcium intakes were associated with an increased risk of prostate cancer. (18)
Consumption of dairy, calcium, vitamin D, and prostate cancer risk:
Consumption of dairy products, calcium, and vitamin D showed no increase in the risk of prostate cancer in this review and meta-anlaysis of 45 observational studies. Cohort studies demonstrated no link between dairy or milk consumption and increased risk of prostate cancer nor did case control studies of calcium intake. Additionally, dietary intake of vitamin D was not correlated with increased prostate cancer risk. The study did find that as calcium intake from food increased, the risk of prostate cancer decreased across all races. (19)