teen health

Doctors and parents often miss the signs of female athlete triad syndrome — low energy, low bone density and irregular menstruation in an otherwise healthy-looking girl or teen.

The notoriously short night's sleep that many tired adolescents get isn't all about surging hormones and too much homework, according to a sociologist who looked at shifting sleep patterns from ages 12 to 15. Teens who report good relationships with family and schoolmates tend to sleep better.