In a study of 647 men who were tested for pros- Itate cancer, researchers found that for those whose body mass index (BMI) was 25 or above, a lower threshold for the prostate-specific antigen (PSA) density test—a measure of PSA divided by prostate volume—was necessary to accurately predict who had cancer. Researchers don't know why BMI may be linked to prostate cancer.

If you are an overweight or obese man: Ask your doctor whether you need additional screening tests for prostate cancer.

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