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Diabetes costs the United States $322 billion a year, or $1,000 for each American. That's 48 percent more than it was just five years ago.

Nearly a third of us are overweight, and some of the worst rates of obesity are in the developing world. All this corpulence takes a huge economic toll.

U.S. children’s hospitals delivering the highest-quality care for children undergoing heart surgery, also appear to provide care most efficiently at a low…

In the clinic where Balazs Halmos, MD, treats patients twice a week, individuals who have been smokers confront their diagnosis with a sense of guilt,…

As Ebola declines in Liberia, it’s on the rise in Sierra Leone. The outbreak has moved from a rural area to the capital.

A census of bacteria and viruses on the floors, toilets and soap dispensers of several bathrooms on a college campus turned up around 77,000 different types of organisms. Oh, joy.

Dr. Prabhjot Singh lives and works in Harlem, a neighborhood plagued by chronic disease. He thinks an African model of health care can help — training people in the community to be health educators.

Harvard Medical School investigators at Massachusetts General Hospital have developed a system to accurately track the dynamic process of falling asleep,…

There's not enough evidence that screening the general public for vitamin D deficiency helps reduce the risk of disease, the U.S. Preventive Services Task Force says.

A woman is thought to be spreading Ebola in a remote village. So health workers spend four hours trekking through the bush to track her down. By the time they make it, it's too late.