May 23, 2011 Metal has been the material of choice for artificial hips in part because it's supposed to last longer than other materials. But doctors are discovering that metal shavings from the device can get into the bloodstream. Now some are recommending a plastic lining between the metal ball and socket to minimize the shedding of metal particles.
May 9, 2011 Tattoos and permanent makeup are more popular than ever. Health officials are now looking at whether salons that do them are mixing their inks with harmful substances. The FDA also says it's starting to see an increase in consumer complaints about infections and other reactions to inks.
April 25, 2011 Scientists are discovering that people who sit more have higher levels of cholesterol, blood sugar and triglycerides and even bigger waist sizes. But breaking up a day of inactivity with movement, even if just for a few minutes, can make a difference.
March 28, 2011 Contrary to popular belief, running isn't damaging to your knees. In fact, a light running regimen may actually strengthen healthy knees. But researchers say if you've just had knee surgery or if you're overweight, don't suddenly jump right into an intensive running program.
March 16, 2011 A new study finds that older adults have trouble multitasking, while young people are pretty good at it. Older people might rethink how many things they try to do while crossing busy streets.
March 16, 2011 Heavy smoking and even moderate smoking has decreased in states from coast to coast since the 1960s. California has led the way.
March 14, 2011 Sleep apnea is a chronic and common sleep disorder that makes it hard to breathe while sleeping. When all else fails, doctors are turning to a surgery currently used to remove cancerous tumors at the back of the throat. It relies on robots to do the delicate task of removing tissue in the throat.
March 7, 2011 The less costly and less invasive needle biopsy can detect cancer for 85 to 90 percent of all women with suspicious mammograms or breast lumps, doctors say. But in Florida, some 30 percent of breast biopsies are still performed with more invasive surgery.
January 24, 2011 Researchers say the type of formula parents feed their babies matters. Babies who feed on cow-based formulas are more likely to put on weight rapidly compared with those whose formulas contain predigested proteins. Infants who gain weight rapidly in their first four months are more likely to be obese by age 20.
December 27, 2010 Some drinkers consume more than what's considered safe, but less than what's considered risky — what researchers call the "gray zone" of alcohol consumption. Studying this gray zone of drinking may explain who's at risk for problems and who's not.
December 20, 2010 Parents nowadays are trying to be closer to their kids than ever before, which can make it harder to set limits. A Harvard psychologist advises parents to encourage teens' independence, but also be clear about when they cross the line and what is expected of them.
December 13, 2010 A condition where the baby's left ventricle fails to develop used to be a death sentence for newborns. But surgical advances have greatly improved the chances of survival of hypoplastic left heart syndrome, and now some born with the defect have reached their 20s and 30s.