High school students who get too little sleep — or too much — are also more likely to drive drunk or take other risks.
That's the finding of a government survey of more than 50,000 high school students.
Researchers said they don't know if sleep issues cause teens to take dangerous risks, or whether both are a reflection of depression or other problems.
Students who get only five or six hours a night were twice as likely to say they'd driven while drinking in the previous month, compared to kids who regularly got a full night's sleep. That was also true of kids who got 10 or more hours per night, compared to regular sleepers, researchers found.
The CDC released the study Thursday.