actually it saves lives in young women, older women with breast cancer have a high liklihood of slow growing cancers so to lump them with young women with breastcancer you have a selection bias skewing the results to no change in mortality. The american cancer society vehemently protests the UPTS which is a committee of specialist who dictate guidelines, not a scientific body. The UPTS did not have a single radiologist, or urologist and lack of oncologists , the very fields that do the research and know the complete data . I will dig up the study that came out one month after the UPTS guidelines that showed mammograms in a womans forties do save lives ( when it is most aggressive). Mammograms in 80's, dont save lives.