(Aging Untold) - Prostate cancer is one of the most common cancers for men in the United States, but deciding when to get screened isn't always clear.

While a PSA blood test can help find prostate cancer, experts often disagree on who needs one and what the results actually mean.

PSA stands for prostate-specific antigen, a protein made by the prostate gland that can be measured by a simple blood test.