Take a Number: Nearly Half of Teens Have Had Sex by Age 19, Survey Finds Sexual activity declined among adolescents in the 1990s, and rates have remained low. Still, teenagers in the United States are more likely to become pregnant than those in other western countries. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:WATCH LIVE as Russian cosmonauts step outside the ISSHow to Plan a Last-Minute Eclipse TripSperm Count in Western Men Has Dropped Over 50 Percent Since 1973, Paper FindsMeals for Your Eclipse Menu‘Tools of DESTRUCTION’ Quantum computers WILL wreak havoc warns physicistTrump to Roll Back Obama’s Flood Standards for Infrastructure