Sally O'Neill decided to have a double mastectomy rather than "do a wait-and-see." Richard Knox/NPR hide caption

itoggle caption Richard Knox/NPR

The Susan Komen for the Cure Foundation is pulling back from some high-profile fundraising walks. LM Otero/AP hide caption

itoggle caption LM Otero/AP

In sharing her decision to have a double mastectomy, Angelina Jolie has given voice to a dilemma more women are facing. Carlo Allegri/AP hide caption

itoggle caption Carlo Allegri/AP

Actress Angelina Jolie at a news conference with Secretary of State John Kerry (in background) and other foreign ministers in London last month. They held a forum on how to reduce sexual violence against women in conflict zones — an issue she has often spoken about. Alastair Grant /PA Photos /Landov hide caption

itoggle caption Alastair Grant /PA Photos /Landov

Betty Daniel gets a routine yearly mammogram from mammography tech Stella Palmer at Mount Sinai Hospital in Chicago in 2012. Heather Charles/MCT/Landov hide caption

itoggle caption Heather Charles/MCT/Landov

A mammographer prepares a screen-film mammography test for patient Alicia Maldonado at a hospital in Los Angeles. Damian Dovarganes/AP hide caption

itoggle caption Damian Dovarganes/AP