At an altitude of nearly 3 miles, the Tibetan plateau is an extreme place to live. It's cold, it's hard to grow food, and there's about 40 percent less oxygen in the air than there is at sea level.
Somehow, though, native Tibetans are adapted to it. Their bodies — and their blood in particular — work differently than those of people used to lower altitudes. The Tibetans' advantage might be thanks to an ancient inheritance.
A prestigious scientific journal Wednesday took the unusual step of retracting some high-profile research that had generated international excitement about stem cell research.
The British scientific journal Nature retracted two papers published in January by scientists at the Riken research institute in Japan and at Harvard Medical School that claimed that they could create stem cells simply by dipping skin and blood cells into acid.
We all know that a healthy lifestyle can keep heart disease at bay. But if like many of us you spent your 20s scarfing down pizza, throwing back a few too many beers and aggressively avoiding the gym, don't despair.
People who drop bad habits in their late 30s and 40s can reduce their risk of developing coronary artery disease, according to a study published Tuesday in the journal Circulation.
There's no getting around the fact that the abuse of prescription painkillers is a huge problem in the U.S. Prescription drug overdoses now kill more people each year than car crashes.
But the overdose risks vary quite a bit depending on where in the country you live. One reason is that how often doctors prescribed the drugs, such as Percocet, Vicodin and generic opioids, varies widely by state.