Doctors are warning about vitamin D again, and it's not the "we need more" news you might expect. Instead, they say there's too much needless testing and too many people taking too many pills for a problem that few people truly have.
Anesthesia during early childhood surgery poses little risk for intelligence and academics later on, the largest study of its kind suggests.
Smoking a pack of cigarettes a day causes an average of 150 mutations a year in lung cells, according to a new study that identifies specific ways smoke exposure damages DNA.
Doctors have found a disturbing downside to some powerful new drugs that harness the immune system to fight cancer: In rare cases, they may cause potentially fatal heart damage, especially when used together.
A wearable skin patch may help children who are allergic to peanuts by delivering small doses of peanut protein, according to a new study that calls for the therapy to be further explored.
Another folk remedy bites the dust. Cranberry capsules didn't prevent or cure urinary infections in nursing home residents in a study challenging persistent unproven claims to the contrary.
A labelling error and reckless media hype in the 1980s led to unjustly branding a gay airline employee as "Patient Zero" in the U.S. AIDS epidemic, scientific and historical sleuthing detailed Wednesday.
A year-long training programme to help parents communicate with their very young autistic children reduced symptoms of the disorder up to six years later, according to a follow-up analysis released Wednesday.
Think autism and an image of an awkward boy typically emerges, but the way autism strikes girls -- or doesn't -- may help reveal some of the developmental disorder's frustrating secrets.
To reduce the risk of sudden death, babies should sleep in the same room as their parents but in their own crib or bassinet for the first year of life, U.S. doctors said Monday.