Cannabis users who start smoking the drug as adolescents show an irreparable decline in IQ.
This decline in the adolescent IQ is greater with more persistent use of cannabis.
Adolescents are particularly vulnerable to develop cognitive impairment from cannabis use because of the severe neurotoxic effects on the adolescent brain.
This study was presented at the 14th International Congress on Schizophrenia Research in April 2013 and is based on a New Zealand study.
Cannabis use studies are showing more and more damage to users particularly those that start in their teens.
The USA is leading the world with research linking cannabis use with permanent health damage.
The reason why the USA is undertaking medical research on cannabis is that there is a push to make cannabis a medicine.
Like in the U.S.A., Australians are commencing cannabis use earlier in their teens so the brain impacts will be evident here.
Like in the U.S.A., there is a push to legalize cannabis use as a medicine in Australia.
Normalized cannabis use is proven to increase the use of cannabis in the general population by sending out the message that cannabis is safe- which it is not.