Pedometer, an app, keeps track of your steps, distance traveled and calories burned. Benjamin Morris/NPR hide caption

itoggle caption Benjamin Morris/NPR

Hugo Campos' implantable cardioverter-defibrillator was a mystery to him. So he decided to ask his doctor for access to the data. He made this image with one of his own X-rays. Hugo Campos hide caption

itoggle caption Hugo Campos

Katherine Leon says she spends up to 12 hours a day online interacting with others who share her rare heart condition. Emily Bogle/NPR hide caption

itoggle caption Emily Bogle/NPR

Becky Cole was eight months pregnant with her son Ryan when she passed out. Her husband performed CPR for six minutes with the help of a dispatcher before medics arrived. Courtesy of Medic One Foundation hide caption

itoggle caption Courtesy of Medic One Foundation

Karlton Hill, 15, was diagnosed with diabetes when he was 12. He works hard to manage the disease: He jogs and does pushups every day; he takes metformin is very careful about what he eats. Leslie Capo/LSU Health Sciences Center hide caption

itoggle caption Leslie Capo/LSU Health Sciences Center

Aspirin helps reduce the risk of cardiovascular disease, but the jury's still out on cancer. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Lipitor, and other cholesterol-fighting drugs like it, will carry new instructions about risks. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP