The White House Office of National Drug Control Policy noted many teens report getting their marijuana from others with medical marijuana access. Past-month pot use by high schoolers jumped over five years, and perceived risk by teens is plummeting, said the annual report of the National Institute on Drug Abuse.
Colorado, Washington and other states heading toward legalization are conducting a "large social experiment (that) portends a very difficult time" for drug-abuse control, said Gil Kerlikowske, director of the Office of National Drug Control Policy.
Legalization advocates, meanwhile, cited other statistics in the report showing the recent national trend in high school use of pot is flat.
