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Scientists tracking the ancestry of whooping cough say it arose abruptly in humans about 500 years ago, caused by a mutated bacterium that once lived only in animals. Genetic tricks helped it spread.

There's good news and bad news about aging boomers, a Census Bureau report finds. They're drinking less and voting more, but they're also heavier, which could mean less independence later.

We know some people are more at risk for abusing alcohol than others. Now scientists say they're getting closer to predicting which teenagers are most at risk.

Since the hormone oxytocin makes people more social, it's easy to imagine it might cause the social deficits of autism. But a study found children with autism no more likely to be short of oxytocin.

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.

Patients are often sent for rehabilitation after surgery. But starting those exercise and healthy eating programs before the surgery might help even more. It's not rehab, it's "prehab."

The number of children diagnosed with autism keeps rising, but researchers warn that it may be just because we're getting better at recognizing and treating the disorder.

In 2010, 15 percent of people who went to the doctor for a headache got a brain scan, even though the vast majority of headaches aren't symptoms of something seriously wrong.

Some patient groups, including the American Cancer Society Cancer Action Network and the American Lung Association opposed the bill because they said it could do more harm than good.

Two of the four insurers currently offering plans on Indiana’s Affordable Care Act health insurance marketplace announced Wednesday they were pulling…