Study finds that U.S. teens are having less sex

http://www.foxnews.com/health/2011/03/03/teens-having-sex-study-finds/

A federal study released thursday that teen sex has decreased in the past decade, but doesnt tell a reason why. The study, based on interviews with approximately 5,300 young people between the ages of 15 and 24, shows a decrease in sexual contact from 78 percent to about 72 percent in the last 10 years.
I think the reason why teens are having less sex is because health classes are teaching more and more about STD'S, and teen pregnancys.