A new study of athletes suggests exercise may help support a rich, diverse mix of bacteria in the gut. But scientists say the athletes' high-protein diet may also be supporting the community.

More people are using insulin to control Type 2 diabetes, and most of those people are using newer analog forms. But patients pay more out of pocket for these drugs, a study finds.

A new report finds that average waiting times for an appointment at the Veterans Affairs Hospital in Indianapolis is 54 days. The information is part of an internal audit by the Department of Veterans Affairs.

Boys are more likely to be diagnosed with attention deficit hyperactivity disorder than girls, though both sexes are equally affected. Women are increasingly seeking treatment as young adults.

Most people diagnosed with heart failure die within five years, yet doctors often don't ask them about how they want to prepare for death, a study finds. They cited lack of confidence as one reason.

Finding and paying for a psychologist or psychiatrist can be difficult at any age. But young adults just making their way in the world face particular challenges.

Women with multiple sclerosis often find that they have fewer problems when they are expecting. That led researchers to develop an experimental drug based on a hormone associated with pregnancy.

Most attempts at a malaria vaccine have unsuccessfully tried to keep the parasite from breaking into red blood cells. But a new twist that keeps the parasite from escaping the cells may work better.

After your doctor asks you whether you smoke, she might also ask if you feel safe with your partner. But an analysis suggests universal screening may not be helping people who have been abused.

Scientists are racing to figure out how the MERS virus infects and kills people. It first surfaced in 2012, and has spread to the United States and other countries. Here's what we know so far.