Using powerful technologies, scientists found staggering amounts of lead and other toxic substances in the composer’s hair that may have come from wine, or other sources.

After being diagnosed with advanced breast cancer when she was 23, she became determined to educate other young people about early detection.

People with two copies of the gene variant APOE4 are almost certain to get Alzheimer’s, say researchers, who proposed a framework under which such patients could be diagnosed years before symptoms.

A 12-year-old boy in the Washington, D.C., area faces months of procedures to remedy his disease. “I want to be cured,” he said.

New research suggests people tend to be lonelier in young adulthood and late life. But experts say it doesn’t have to be that way.

Recent studies cast doubt on whether large-scale mental health interventions are making young people better. Some even suggest they can have a negative effect.