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Can the diabetes drug metformin reduce the risk of prostate cancer?

Marc B. Garnick, MD
Hematology & Oncology
Some studies have shown that men with diabetes are less likely to develop prostate cancer than the general male population, perhaps because they take a drug called metformin, which affects insulin levels.

A retrospective analysis of who gets prostate cancer showed that men who had been taking the diabetes drug metformin were less likely to develop prostate cancer than those who weren't diabetics or who had been treated with insulin or other diabetes drugs.

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