A federal task force recommends doctors stop routine prostate cancer screening for men over 75 because it could do more harm than good.

The U.S. Preventive Services Task Force reports finding evidence that the benefits "are small to none." However, treatment often causes "moderate-to-substantial harms," including erectile dysfunction and bladder control and bowel problems.

About 220,000 American men will be diagnosed with prostate cancer this year. But most tumors grow so slowly they never threaten lives.

A study earlier this year concluded older men with early-stage prostate cancer were not taking a big risk by not treating it right away.

Some doctors instead recommend "watchful waiting" to monitor signs of the disease and treat only if they worsen, but smaller studies give conflicting views on whether that's a safe approach.