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August 27, 2012 Sleepwalking is common among children, and for many, it persists into adulthood. Though it's still not well understood, scientists have identified several factors that can trigger episodes of sleepwalking.

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August 24, 2012 KUHFHuman breast milk has health benefits for infants, but many mothers can't nurse their babies. Donor milk banks in some hospitals are looking to improve infant health by distributing breast milk donated by other nursing mothers.

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August 23, 2012 Federal and state health investigators have identified outbreaks of skin infections linked to tattoos in four states. At least 14 people in New York were infected by ink that was apparently contaminated during manufacturing.

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August 22, 2012 Icelandic scientists have found solid evidence that older men have more random mutations in their sperm cells. They're warning that can cause autism, schizophrenia and a long list of other genetic diseases in their offspring. Their findings are reported in the journal Nature.

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August 8, 2012 Scientists have learned that compact fluorescent light bulbs could give off ultraviolet radiation if their inner coating cracks. Light-emitting diodes, another eco-friendly lighting option, won't give you a sunburn, but they do have the potential for other mild health effects.

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August 6, 2012 If the London Olympics opening ceremony's tribute to the National Health Service is any indication, Brits are pleased with their health care system. But what would greet an American at a hospital in the U.K.?

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August 6, 2012 Graduate student Robert Lynch is on a quest to deconstruct our built-in instinct for humor, and find out why making people laugh could be important to the way we've adapted to survive.

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August 3, 2012 Athletes train for years to get their bodies in top shape for the Olympics, and muscle definition is an attractive benefit. But for some people, chiseled abs just might not be in the cards.

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August 2, 2012 Psychologists are learning why we rely on rituals when there's something we want but don't know how to get. In a new paper, they say we're more likely to believe a ritual will work if it involves repetition and lots of steps.

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July 24, 2012 Scientists have long studied why some requests seem to be met with a yes while others get a no. Now, there's a new development: A study finds that asking for unusual favors can be very effective in getting people to comply.

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July 24, 2012 How do you get women to rethink condoms made for them? Advocates are trying a fashion show and the world's longest chain of paper dolls at the international AIDS meeting in Washington. Female condoms are the only contraceptive initiated by woman that protects against HIV infection.

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July 19, 2012 A part of the brain called the premotor cortex does some pretty complicated work. It's where the brain plans and strategizes about how to take action, and it may also reflect a person's personality.

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July 19, 2012 HIV is like a jack-in-the-box. When the viruses bump into particular cells in the immune system, the viruses' shells pop open and their genes enter the cells. Experimental therapies for HIV could stop the virus from getting in.

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July 11, 2012 The mutation is rare but it appears to protect some people from developing the disease. The finding is an encouraging sign for drug researchers looking for medicines that have a similar effect in the brain.

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July 11, 2012 As governors weigh whether to participate in an expansion of Medicaid under the federal health law, some worry the change could attract people who don't qualify for a special subsidy. Adding them to Medicaid rolls could strain states' budgets.

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