[wideawake]

According to the DSM-IV, the ingestion of large amounts of delta-9-THC can indeed produce violent psychosis.

It's a documented medical fact.

[dirtboy]

And I do think that long-term cannabis abuse can lead to psychosis. Just like long-term alcohol abuse can change one's brain as well.

So if cannabis causes mental illness in some cases, and that is the justification for making weed illegal, then I guess we should outlaw booze as well. And we won't even need to amend the Constitution this time - SCOTUS has found that the feds have this power under the Commerce Clause and the Necessary and Proper Clause.

[MeanWestTexan]

Drinking too much water and upseting your electrolytes can cause hallucinations and pychosis, followed by death.

[Sir Gawain]

DSM-IV

So you're citing the DSM-IV as an authority? That's not a road I'd want to go down.

[antiRepublicrat]

According to the DSM-IV, the ingestion of large amounts of delta-9-THC can indeed produce violent psychosis.

No clear causal relation between cannabis and psychosis have been found. Possible casual relations have been found though, as in one root condition may result in both a predisposition to cannabis use and psychosis.