Women infected with the Zika virus late in their pregnancies had babies with no apparent birth defects, according to a study in Colombia that seems to confirm that the greatest risk to infants comes...

Two new studies are offering some of the clearest snapshots yet of how babies build up protective gut bacteria, adding to evidence that antibiotics and birth by C-section may disrupt that...

Scientists say most antidepressants don't work for children or teenagers with major depression, some may be unsafe, and the quality of evidence about these drugs is so bad the researchers cannot be...

Countries committed to nearly doubling the number of people who receive life-saving HIV treatment over the next five years as a high-level United Nations conference devoted to ending the AIDS epidemic...

The recommendations range from up to 16 hours daily for babies to at least eight hours for teens. They come from a panel of experts and give parents fresh ammunition for when kids blame them for...

A powerful new technology holds the promise of rapidly altering genes to make malaria-proof mosquitoes, eliminate their Zika-carrying cousins or wipe out an invasive species, but a report Wednesday...

Scientists say most antidepressants don't work for children or teenagers with major depression, some may be unsafe, and the quality of evidence about these drugs is so bad the researchers cannot be...

The troubles with kids these days ... are not as common as they used to be. U.S. teens are having a lot less sex, they are drinking and using drugs less often, and they aren't smoking as much,...

Jack Crowley was 15 when a baseball hit him in the chest and stopped his heart. The Long Island teen survived thanks to a police officer who grabbed a defibrillator and shocked his heart back into...

Before his death, Muhammad Ali was hospitalized with respiratory problems, his health complicated by advanced Parkinson's. The boxing great had lived with the degenerative disease for three decades....