The body is designed to work in a certain way. To think you can barrage the body with foreign chemicals and do no damage simply defies belief.
But this is what marijuana-smokers and legalization advocates believe.
Talk to them about the harmful effects of marijuana, and they will either deny that any exist, or they will quickly change the subject to alcohol, which they will claim is far more harmful.
Then they will tell their counterpart that because he or she surely drinks alcohol he or she must be a hypocrite.
Refer to this link for more details
http://www.northstarnational.com/2010/06/30/new-report-cannabis-contributes-to-psychosis-and-might-even-be-a-primary-cause/
For further data and links about this topic .....visit page....
http://cannabisvictim.blogspot.com/p/reefer-madnessmental-health-issues.html
MENTAL HEALTH ISSUES / 'REEFER MADNESS'
*************************************************