Men with diabetes are at lower risk for prostate cancer compared with nondiabetic men, researchers reported in the American Journal of Epidemiology (2009;169:937-945).

The study included 5,941 cases of prostate cancer identified over a 12-year period (1993-2005) among 86,303 men from various ethnic groups. The risk reduction for diabetics ranged from 11% among African Americans to 35% among European Americans.

Mean PSA levels were significantly lower in diabetics than nondiabetics (1.07 vs. 1.28 ng/mL, respectively).

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