Individual risk should determine screening

In the first paper, researchers from Harvard Medical School reviewed 50 years of evidence on the benefits and risks of mammograms from 1960 to 2014.

They found mammography was associated with a 19% overall reduction of breast cancer mortality, or about a 15% mortality reduction for women in their 30s compared to a 32% reduction for women in their 60s.

They also found that for a 40- or 50-year-old woman undergoing 10 years of mammograms, the cumulative risk of a false-positive diagnosis is