An influential panel of experts questioned two big reasons people take vitamin D supplements.
The U.S. Preventive Services Task Force concluded in draft recommendations released Tuesday that taking less than 400 international units of vitamin D and 1,000 milligrams of calcium every day doesn't reduce the risk for bone fractures among postmenopausal women. And so the task force recommended against doing that.
The growing awareness about the abuse of prescription painkillers hasn't kept the problem from skyrocketing. In 2008, 14,800 people died of an overdose, according to the Centers for Disease Control and Prevention, more than overdose deaths from cocaine and heroin combined.
When Dr. Barbara Natterson-Horowitz was asked to treat an exotic little monkey with heart failure at the Los Angeles Zoo, she learned that monkeys can suffer heart attacks from extreme stress — just like humans. That's when the cardiologist realized she'd never thought to look beyond her own species for insights into disease.