From http://norml.org/about/intro :
"Since its founding in 1970, NORML has provided a voice in the public policy debate for those Americans who oppose marijuana prohibition and favor an end to the practice of arresting marijuana smokers. A nonprofit public-interest advocacy group, NORML represents the interests of the tens of millions of Americans who smoke marijuana responsibly."
Drugs do NOT cause health risks to the average smoker. Yes, perhaps if you smoked 40 joints a day for the rest of your life, you might have a health problem, but who's got that much weed?
This site should, however, be marked as unsafe for children, even though they get "high" in their own ways... Ever seen a child spin around until dizzy? Getting "high."