Sleep less = weigh more.

• Position: Health - Risk of being overwieght by losing sleep - Brief article

Scientists have long known that getting too little sleep increases a person's risk of being overweight. But a new study suggests that losing a few hours of sleep over just one week--as students cramming for exams often do--can lead to an almost immediate weight gain. Researchers at the University of Colorado monitored 16 men and women who slept nine hours a night for one week and five hours a night another week. (Teens need about nine hours of sleep per night and adults about eight, according to the National Sleep Foundation.) When they had...