As the U.S. population ages and continues packing on the pounds, knee replacement surgeries are becoming increasingly common. More than 650,000 total knee replacements were performed in 2008 (according to the latest data available). And as materials and surgical technologies improve, the promise of newer and better implants is making the procedure even more appealing [...]

More than one in three people in the U.S. currently have some form of heart disease, and it remains the leading cause of death in the country. Treating all of our coronary heart disease, heart failure, high blood pressure, stroke and other conditions last year cost about $272.5 billion. In 20 years, that price tag [...]

Steven Moss has pretty much seen it all—lodged in people’s digestive tracts. As a gastroenterologist at Rhode Island Hospital, he has helped remove batteries, blades and even bed springs from people’s esophagi and stomachs. But these patients weren’t children. They were adults who had swallowed dangerous objects on purpose. "Intentional, rather than accidental, swallowing is [...]