February 24, 2013 By examining ancient dental plaque, researchers have concluded that prehistoric humans' diets made for healthier mouths. The addition of flour and sugar to modern diets may have set the stage for a near-constant state of oral disease.
February 22, 2013 Dozens of kids get sick after a seemingly innocent birthday party. Was it the homemade ice cream or an accident in the pool? A new iPad app lets you solve outbreak puzzles just like real disease detectives. It's pleasing entertainment, if not as infectious as real video games.
February 22, 2013 Kids whose parents have talked to them about the dangers of drugs are more likely to think that using isn't OK. That message can become mixed when parents bring up their own experience. There's no need to lie to a child, but parents should be careful about offering too much information.
February 22, 2013 Treating people for HIV isn't just beneficial for those infected but also helps the entire community. Two studies show that where HIV drugs are widely available, the risk for new HIV infections drops dramatically and overall life expectancy increases by more than a decade.
February 22, 2013 In early 2012, experiments that made H5N1 bird flu more contagious caused an uproar. People feared that mutant viruses could escape the lab and kill people. To prevent a repeat, the government has unveiled a policy describing how scientists should study dangerous pathogens and toxins.
February 21, 2013 It appears that the current batch of flu vaccine is only about 9 percent effective in protecting people 65 and older against the H3N2 flu strain that's causing the most illness. Even so, health officials still recommend vaccination.
February 21, 2013 Fish fraud is often just a form of swindling when a cheap fish, like tilapia, is sold as pricy red snapper. But a conservation group says it also puts consumers at risk of health issues and makes it harder to avoid buying fish that are being overfished.
February 21, 2013 Emergency contraceptives like Plan B and ella are effective at preventing pregnancy after unprotected sex. Claims that the pills are tantamount to abortion, however, aren't supported by science, say researchers. The only way the drugs work is by stopping a woman's body from ovulating.
February 21, 2013 Federal officials say executives from the now-defunct Peanut Corp. of America knowingly distributed peanut products that were contaminated with salmonella. The charges stem from a 2009 salmonella outbreak that sickened more than 700 people.
February 21, 2013 Dr. Sam Parnia researches the experiences of cardiac arrest patients in the time between when their hearts stop and when they are brought back to life. Parnia thinks of these experiences as actual-death experiences as opposed to near-death experiences.