A New York Times article by Nina Agrawal reports that the American Cancer Society now recommends all men ages 50 to 69 get a P.S.A. blood test every two years, a reversal from earlier guidance that left screening decisions to men and their doctors, with earlier annual screening from 45 for Black men and those with a strong family history. Robert Smith of the cancer society cites a European trial finding 13 percent lower prostate cancer death among regularly screened men, but Dr. Alex Krist and some other experts warn the new approach brings many harms, including overtreatment causing erectile dysfunction and incontinence, and Dr. Otis Brawley attributes Black men's worse outcomes mainly to unequal access to care.