Weed is an amazing thing. If I had such a flair for music as Ozzy Osborne had, I would be the author of 'Sweet Leaf'. The problem is, I'm a sincere person and my girlfriend hates weed. She had a few bad trips. She said she felt like dying and that it was the worst experience she had ever had. She also says that there is a relation between smoking weed and schizophrenia - she told me about a friend who had this diagnosed and they said it was because of smoking weed. She doesn't know, however, how much did he smoke.
I would appreciate very concrete information - personal experience as well as scientific data - not things like 'hey dude weed ain't a shit it's cool'. Just in case.