Taking fish oil or vitamin D? Big studies give long-awaited answers on who does and does not benefit from these popular nutrients. Fish oil taken by healthy people, at a dose found in many...

Anyone who came of age in the 1990s remembers the “Friends” episode where Phoebe and Rachel venture out to get tattoos. Spoiler alert: Rachel gets a tattoo and Phoebe ends up with a black...

It was launched decades ago as an anesthetic for animals and people, became a potent battlefield pain reliever in Vietnam and morphed into the trippy club drug Special K. Now the chameleon drug...

New evidence about a cancer operation in women finds a higher death rate for the less invasive version, challenging standard practice and the "less is more" approach to treating cervical...

Growing up amid the tumult of the Cuban Missile Crisis and the Vietnam War, Rick Doblin says he became convinced that humanity was "crazy" and "inherently destructive." As a teenager, he came to see...

One hundred years ago, a novel pandemic influenza virus spread rapidly around the world. It killed about 1 to 2 percent of the human population, primarily young and often healthy adults. The...

Gun injuries, including many from assaults, sent 75,000 U.S. children and teens to emergency rooms over nine years at a cost of almost $3 billion, a first-of-its-kind study found. Researchers...

Adolescence is the life stage when mental illnesses are most likely to emerge, with anxiety disorders being the most common. Recent estimates suggest that over 30 percent of teens have an anxiety...

Two U.S. government agencies are giving conflicting interpretations of a safety study on cellphone radiation: One says it causes cancer in rats. The other says there's no reason for people to...

Doctors at Nairobi's Kenyatta National Hospital have told Robert Wanyonyi there's nothing more they can do for him. Yet more than a year after he first arrived, shot and paralyzed in a robbery, the...