If you're middle age and sleep five or less hours a night, you may be increasing your risk of developing high blood pressure, according to a study released by Columbia University's Mailman School of Public Health and the College of Physicians and Surgeons, and reported in Hypertension: Journal of the American Heart Association

Sleep week

Take our sleep test, get the results of GMTV's Great Sleep Survey, plus advice on dreams and sleeping disorders

AC21 Research Festival - International Symposium 4th July 2006 Health, Wealth & Nutrition Symposium