The unending litany of mass shootings in recent years has built an unacknowledged community of heartbreak, touching and warping the lives of untold thousands.
Americans are becoming increasingly sedentary, spending almost a third of their waking hours sitting down, and computer use is partly to blame, a new study found.
Tragedies like the Marjory Stoneman Douglas High and Sandy Hook Elementary school massacres eventually fade from view, blunted by other mass shootings and the passage of time. But for the...
Rising suicide rates and depression in U.S. teens and young adults have prompted researchers to ask a provocative question: Could the same devices that some people blame for contributing to...
Marijuana's main mind-altering ingredient was detected in nursing mothers' breast milk in a small study that comes amid evidence that more U.S. women are using pot during pregnancy and afterward.
New research shows 1 in 7 U.S. adults have tried electronic cigarettes. That's an increase but it's offset by a small decline in the number currently using the devices.
Attempted suicides, drug overdoses, cutting and other types of self-injury have increased substantially in U.S. girls, a 15-year study of emergency room visits found.