Facts & Figures
Sounding the alarm about sleep
50 to 70 million
Number of U.S. adults with chronic sleep or wakefulness disorders
7 to 9
Hours of sleep a night recommended for adults
Percentage of adults who sleep less than 7 hours a night
8.5 to 9.25
Hours of sleep a night recommended for teens
Percentage of teens who sleep less than 8.5 hours on school nights
Percentage of drivers who admit to having driven while drowsy at least once during the previous month
Hours of unbroken wakefulness at which one's impairment in reasoning ability equals that due to intoxication at a blood-alcohol level of .1%
Year that DHMC's Sleep Center—one of the nation's first—opened
Number of accredited sleep centers in the U.S. today
If you'd like to offer feedback about this article, we'd welcome getting your comments at DartMed@Dartmouth.edu.
This article may not be reproduced or reposted without permission. To inquire about permission, contact DartMed@Dartmouth.edu.