Relationship between sleep habits and body weight

Need or want help achieving and maintaining a healthy weight? Aim for eight hours of sleep a night. Research suggests that appetite-regulating hormones are affected by sleep and that sleep deprivation could lead to weight gain. In two studies, people who slept five hours or less per night had higher levels of ghrelin - a hormone that stimulates hunger - and lower levels of the appetite-suppressing hormone leptin than those who slept eight hours per night. So make sure getting adequate sleep is near the top of your optimum health checklist! ---Dr. Andrew Weil