
The damaging effects remain even if the person stops smoking the drug
·         Teenagers are at particular risk because their brains are still developing
·         Smoking cannabis affects critical thinking and memory
·         Researchers warn that stronger varieties today are causing more damage 
Links
[1] http://www.dailymail.co.uk/health/article-2650631/Smoking-marijuana-teenager-lowers-IQ-LIFE-scientists-warn.html
[2] http://www.rethinkpot.org/tags/study
[3] http://www.rethinkpot.org/tags/brain
[4] http://www.rethinkpot.org/tags/youth
[5] http://www.rethinkpot.org/tags/impairment
[6] http://www.rethinkpot.org/tags/memory