Adolescents whose parents ED Hardy enforced bedtimes of 10 p.m. or earlier were significantly less likely to be depressed and to have suicidal thoughts than their peers whose brand clothing parents allowed them to go to bed at midnight or later, Dr. James E. Gangwisch of Columbia University Medical Center in New York City and his colleagues found. "It's kind of a common idea that older adolescents don't need as much sleep as younger adolescents, but that's really not true--they still need about 9 hours of sleep at night," Gangwisch told Reuters Health. Short sleep times and depression have been linked in both teens and adults, he and his colleagues note in their report, and this relationship could be "bidirectional"-meaning Women's ED Hardy slipper getting too little sleep boosts depression risk, while being depressed makes it harder to sleep. Gangwisch and his colleagues looked at a nationally representative group of more than 15,000 seventh- through twelfth-graders surveyed in 1994-1996. Fifty-four percent of parents said their son or daughter had to go to bed at 10 p.m. or earlier on school nights. Another 21 percent said their child's bedtime was 11 p.m., while 25 percent allowed their children to go to bed at midnight or later. More than two-thirds of the adolescents said they went to bed when they were supposed to. Given that parents who were stricter about bedtime might have other qualities that could protect their child from depression, the researchers asked adolescent study participants how much their parents cared for them, and accounted for this in their analysis of the relationship between sleep duration and depression risk.