Three chronic marijuana users-a light user, a moderate user, and a heavy user-stop using marijuana. Before quitting, all three experienced abnormal blood flow in their brains. Several weeks later, blood flow in their brains had MOST likely:
A) returned to completely normal flow levels for all three.
B) returned to completely normal flow levels for the light and moderate users only.
C) returned to nearly normal for the light and moderate users only but remained at abnormal levels for the heavy user.
D) returned to nearly normal for all three.

Question

Quizplus · Accepted Answer

Chronic marijuana use can lead to changes in brain function and structure, including alterations in blood flow. While light and moderate users may experience a return to near-normal blood flow levels after cessation, heavy users are more likely to have persistent abnormalities due to the more significant impact of prolonged and heavy use on the brain.

Three Chronic Marijuana Users-A Light User, a Moderate User, and a Heavy