Today in Health: Most US teens have sex by 18, but pregnancies down, CDC finds On June 22, 2017 By Bernardo Chua via FOX News http://www.foxnews.com/health/2017/06/22/most-us-teens-have-sex-by-18-but-pregnancies-down-cdc-finds.html Advertisements Share this:TwitterFacebookGoogleLike this:Like Loading...