PET scans of former methamphetamine users showed that even after months of abstinence:
A) they experienced occasional episodes of delirium tremens.
B) they had an abnormally low number of dopamine receptors.
C) they had an abnormally low number of serotonin receptors.
D) there were significant increases in the amount of brain tissue in the hippocampus.

Question

Quizplus · Accepted Answer

PET scans of former methamphetamine users showed that even after months of abstinence, they had an abnormally low number of dopamine receptors. Methamphetamine use depletes dopamine levels in the brain over time, and it can take many months for the brain to restore normal levels of dopamine receptors. This can lead to persistent craving for the drug and difficulty experiencing pleasure from everyday activities.

PET Scans of Former Methamphetamine Users Showed That Even After