Can you link us on some studies disproving a link between Marijuana and some long-term health risk? I find it hard to believe that smoking something ISN'T bad for you, though am aware that there are other uses of it, as well..but a lot of people (if not most) tend to smoke it.I don't understand why this is the case, it does sound rather implausible, but this study seem pretty good.[1][2]
What about the long-term cognitive impacts of using Marijuana as a mind-altering substance? Alcohol, caffeine and other drugs have long term effects, so what are the ones from Marijuana?
If you are at risk of some mental illnesses it can trigger the onset of symptoms.[3] I don't think that there has been any studies showing other risks, but there's probably a lack of research in this area.
[1] Paper: http://www.cmaj.ca/cgi/content/full/cmaj;180/8/814
[2] Article: http://www.scientificamerican.com/article.cfm?id=large-study-finds-no-link
[3] Article: http://www.psychologytoday.com/blog/your-brain-food/201011/can-marijuana-induce-psychosis
