Originally Posted by mrsD

Welcome to NeuroTalk:

I wish I could give you good news, but I can't find much in the
literature.



We do have a handy link to PubMed at the right top of the page here.
When you go there to look further use
"methamphetamine long term effects"
or
methamphetamine dopamine transporter

or
whatever, using the word methamphetamine + a qualifying keyword or phrase.

I suspect the long term consequences would be similar to the
known effects of amphetamine or methylphenidate (Ritalin).
Always use generic drug names when searching on PubMed.

There have been suggestions concerning long term use of stimulants in children leading to chronic depression and/or Parkinsonian symptoms later in life. This may vary from person to person.