WEDNESDAY, Aug. 12, 2020 Adding to an ongoing debate over the timing of mammography , a new British study finds that screening women aged 40 to 49 for breast cancer saves lives, with only small increases in overdiagnosis. "This is a very long-term follow-up of a study which confirms that screening in women under 50 can save lives," researcher Stephen Duffy, from Queen Mary University of London, said in a university news release. "The benefit is seen mostly in the first 10 years, but the reduction in mortality persists in the long term at about one life saved per thousand women screened," he added. The findings are now added to the mix of data that has fueled disparate guidelines on breast cancer screening in the United States and around the world. In the United States, for example, the influential U.S. Preventive Services Task Force (USPSTF) now recommends that women at average risk for breast cancer get their first mammogram ...