July 30, 2010 12:12 am Study Links Calcium Supplements to Heart Attacks Many women take calcium supplements to improve their health, but now there’s new evidence that it may be riskier than first thought. US & World Videos 3:04 PurpleStride event in Philly raises money for those battling pancreatic cancer 3:27 ‘Take a Breather' and run to help battle against cystic fibrosis 1:49 How much time do you spend on your phone each week? Keith Jones, Erin Coleman talk screen time 2:52 Join the fight for ovarian cancer treatment and research at the Sandy Sprint 3:13 Movement, memory and Parkinson's awareness