Stimulant psychosis is unrelated to long-term permanent cognitive impairment; it's temporary, for example.
I was hoping to find out more about the medical basis for the "permanent gradual decline of mental abilities" assertion, because it seems hard to believe that our current knowledge of the human brain is sufficient to make such a broad claim with any degree of accuracy.
Well, the page does say "However it has been suggested that about 5–15% of users fail to make a complete recovery from the psychosis in the long term."
And there are other statements suggesting that people that have suffered from acute psychosis are prone to relapses (if a chronic user has more problems than a dabbler, that at least suggests accumulated damage).
Stimulant psychosis is unrelated to long-term permanent cognitive impairment; it's temporary, for example.
I was hoping to find out more about the medical basis for the "permanent gradual decline of mental abilities" assertion, because it seems hard to believe that our current knowledge of the human brain is sufficient to make such a broad claim with any degree of accuracy.