Yep. Teens (ages 13-8) lose 1 percent of their grey matter every year[0]. [0] http://www.pbs.org/wgbh/pages/frontline/shows/teenbrain/work/adolescent.html http

Yep. Teens (ages 13-8) lose 1 percent of their grey matter every year[0]. [0] http://www.pbs.org/wgbh/pages/frontline/shows/teenbrain/work/adolescent.html http://www.pbs.org/wgbh/pages/frontline/shows/teenbrain/work...