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November 21, 2012 Ultrasound often catches fetuses opening their mouths, but whether they're really yawning or not has been up for debate. Now, with some fancy ultrasound techniques, scientists have show that babies do indeed yawn in the womb.

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November 21, 2012 The last three decades have seen a dramatic increase in early-stage, but not late-stage, breast cancers, as mammography has become routine. Some researchers are concerned that women are being treated for cancers that would never turn deadly.

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November 21, 2012 Although new HIV infections have dropped by as much as 50 percent in many African countries, the fight against AIDS seems to be losing its footing in Eastern Europe and parts of Asia. New infections nearly quadrupled in China between 2007 and 2011.

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November 21, 2012 Easier access to oral contraceptives could reduce unintended pregnancies, doctors say. But the Food and Drug Administration would have to allow purchases of the pill without a prescription, and that's not going to happen anytime soon.

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November 21, 2012 CPRPrevious research has found that patients with online access to their doctors made fewer trips to the doctor's office. But a large, just-published study shows just the opposite: Patients who can email their physicians may schedule more visits.

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November 20, 2012 No one really wants to think about what goes down the drain when you flush. But sometimes, you've got to look to see what your bowels are telling you about your health. Doctors have been decoding our pee and poo since medieval times. They've even developed handy visual guides.

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November 20, 2012 More than 40 percent of surgical complications occur after patients are at home. The solution for the problem isn't keeping patients in the hospital longer, researchers say. Better instructions to patients and improved monitoring could help.

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November 20, 2012 KHNJust because medical marijuana is legal where you live doesn't mean your health insurer will deem it worthy of coverage. The feds still classify it as a controlled substance with no accepted medical use and a high potential for abuse, so insurers and employers are wary of paying for it.

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November 19, 2012 A massive research project in California is beginning to show how genes, health habits and the environment can interact to cause diseases. The new combination of genetic and health information is one of the most powerful research tools on earth, a researcher says.

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November 19, 2012 Girls say they are using steroids, too, although they're using the illegal drugs less often than boys, according to researchers at the University of Minnesota and Columbia University. And the researchers found that many teens using steroids or muscle-enhancing supplements are overweight or obese.

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November 19, 2012 Endurance athletes often turn to the same stimulant that gives your morning cup of joe its jolt: caffeine. They're increasingly using caffeinated gels and drinks when they compete. But how much is too much?

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November 19, 2012 Researchers and companies are bringing movement back into the office with treadmill desks, walking meetings and games. Employees say it has helped them lose weight and be more productive.

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November 16, 2012 Back in 1995, about 4.5 percent of adults in the U.S. had been diagnosed with diabetes. By 2010, the prevalence had zoomed to 8.2 percent. An interactive map shows how much worse diabetes has become in less than a generation.

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