AP - The teenage brain, Laurence Steinberg says, is like a car with a good accelerator but a weak brake. With powerful impulses under poor control, the likely result is a crash.

AP - Kimberly Lindsey marvels that her 3-year-old son Merrick doesn’t need to take 10 different medicines anymore. He can safely frolic on the playground among the germs that lurk there.

AP - The popular diabetes drug marketed as Avandia may increase bone thinning, a discovery that could help explain why diabetics can have an increased risk of fractures.

AP - Federal health officials are revising their estimate of how many people are infected by HIV each year, and advocacy groups say the number could rise by 35 percent or more.

AP - Those lords-a-leeping and ladies dancing may want to consider the downside of the holidays: Heart attack season has arrived.

AP - Formerly conjoined twins have “excellent” chances of survival after a grueling separation surgery, and one of the toddlers is even breathing on her own, doctors said Friday.

AP - A woman in her 30s who is one of the four organ transplant patients infected with HIV and hepatitis was not told that the infected donor was high risk, and had previously rejected another donor “because of his lifestyle,” her attorney said.

AP - For two years, Frances Kinley-Manton says she lived with arthritis pain in her hips, a condition that kept her in a wheelchair. She wanted hip replacement surgery. But doctors at Britain’s National Health Service said she was too fat for the operation. “They wouldn’t even put me on a waiting list,” Kinley-Manton recalled.

AP - Republican presidential contender John McCain on Saturday said he wants to again allow the importation of prescription drugs from Canada as a way to bring health care costs under control.

AP - Scores of grumbling parents facing a threat of jail lined up at a courthouse Saturday to either prove that their school-age kids already had their required vaccinations or see that the youngsters submitted to the needle.