The CDC has just released new data on high school teens' sexual behavior and contraceptive use.  Headline?  Not too good. 

Teen sexual activity is up and contraceptive use is down between 2005 and 2007.  On every single measure (ever had sex, currently sexually active, condom use at last sex, pill use, four or more sexual partners) the arrows are pointing in the wrong direction.

Perhaps the more interesting and significant trend, however, is the tale of two decades.  All of these same measures (with the exception of birth control pill use which has declined steadily since 1991) improved dramatically between 1991 and 2001.  Between 2001 and 2007?  The most charitable description of the current decade is...well...running in place. 

A few more YRBS items for your consideration: 

·          National Campaign press release

·          National Campaign fact sheet

·          Full YRBS report

Tell us what you think.  Why do you think teen sexual behavior is changing?