Ben Stiller’s prostate cancer diagnosis: Dr. Oz weighs in on PSA test

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Dr. Mehmet Oz tells TODAY’s Matt Lauer that the prostate-specific antigen (PSA) test may have saved actor Ben Stiller’s life, but says elevated PSA numbers do not always mean a patient has cancer. Dr. Oz says the biggest takeaway is that eating the right foods and exercising are some of the best ways to reduce the chances of dying from prostate cancer.