Pediatrics

Why one teenager may need more—or less—sleep than another

Sleep problems contribute to a number of mental health issues in adolescents, researchers say. But a lingering question is whether some teens need more—or less—sleep than others to be healthy and at their best.

Health

New birth-control rules may shake up behavior

In the battle over birth control, one fact often is overlooked: Women typically spend the bulk of their reproductive lives trying to avoid getting pregnant.

page 5 from 40