more aggressive cancers. As obesity lowers PSA levels, these observations may be
influenced by detection bias. We examined the association between obesity and risk of low-
and high-grade prostate cancer in REDUCE, in which biopsies were largely independent of
PSA. Methods: The REDUCE study tested dutasteride for prostate cancer risk reduction in
men with a PSA of 2.5 to 10.0 ng/mL and a negative biopsy. Study participants included …