Marijuana Smokers Who Start Early Are at Greatest Risk, Study Finds
By Roni Caryn Rabin
New York Times
November 16, 2010
Marijuana smoking often starts during adolescence - and the timing could not be worse, a new study suggests.
Young adults who started using the drug regularly in their early teens performed significantly worse on cognitive tests assessing brain function than did subjects who were at least 16 when they started smoking, scientists reported on Monday.
View the full article here: http://www.nytimes.com/2010/11/15/health/research/15marijuana.html?partner=rss&emc=rss
Keywords: marijuana, smokers, start, early, greatest, risk