Ben Stiller: a Blood Test 'Saved My Life' Actor diagnosed with prostate cancer 2 years ago By Arden Dier, Newser Staff Posted Oct 4, 2016 9:31 AM CDT 23 comments Comments Ben Stiller in London in February. (Photo by Jonathan Short/Invision/AP) (Newser) – Ben Stiller says he survived prostate cancer thanks to a routine test. The 50-year-old actor told the Howard Stern Show on Tuesday that a blood test used to screen for prostate cancer—known as a prostate-specific antigen test—first showed cause for alarm before an MRI and biopsy confirmed he had the disease two years ago, per US Weekly. "At first, I didn't know what was going to happen," he said, per People. Stiller says he's now beat the disease, but wants others to know a PSA test "saved my life" and could save others, too. "Every six months I'm taking my PSA test to make sure I'm clear," he says.