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ere is some evidence that a high intake of calcium may increase the risk of prostate cancer and may also increase heart attack risk, though no randomized trials have specically tested the latter. One study found that men who consumed more than 2,000 mg of calcium daily were ve times as likely to develop metastatic prostate cancer as those who consumed less than 500 mg of calcium per day. Another large epidemiological study found that intake of more than 1,500 mg of cal- cium per day might increase the risk of aggressive and fatal prostate cancer, but not the risk of less aggres- sive, localized cancer. As there are many food sources of calcium available, men should avoid taking calcium supplements unless there are concerns about intake levels—which would warrant a discussion with your physician or a nutritionist.