March 18, 2009 6:28 pm Study: Major Risk Factors for Breast Cancer A new study aggregated research from a variety of studies to determine the major risk factors for post-menopausal women for breast cancer. US & World Videos 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 2:05 How ‘Love Is Blind' made Vanessa Lachey and Nick Lachey's marriage stronger 5:49 Kelly Clarkson hilariously attempts handmade pasta with chef Evan Funke 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business' 1:36 O.J. Simpson's cause of death revealed