August 28, 2012
Teen Marijuana Use Reduces IQ by 8 Points
Naomi Seck, Cosmos Magazine
Teenagers who smoke marijuana regularly may be doing permanent brain damage, reducing IQ by up to eight points, according to a new study.
Researchers compared Intelligence Quotient (IQ) results for subjects aged 13 and then at 38 for more than 1,000 New Zealanders, some of whom were regular cannabis-users and some who were not.
The results, published in the Proceedings of the National Academy of Sciences, were striking.
TAGGED: Intelligence, Marijuana, Teenagers