This might be a good place to start and show him that some general myths have been dis-proven.

http://paranoia.lycaeum.org/marijuan...mythology.html
Frivolous248 Reviewed by Frivolous248 on . Need links to studies about Marijuana. Hey guys. I have a good friend who is terribly uneducated about weed and is threatning to go to my parents and school about my smoking. I need links to studies about weed's non addctive and non harmful effects. Any information would be sweet guys. Thanks. Rating: 5