00:01
Continued use of a psychoactive drug produces tolerance.
00:04
This means, a, the user feels physical pain and intense craving.
00:08
B, is irreversibly addicted.
00:11
C needs to take larger doses for the desired effect.
00:15
Or d needs to take smaller doses for the desired effect.
00:20
So tolerance is describing c.
00:23
So a is withdrawal, which is where if you stop taking something you're addicted to, you can feel psychological or physiological need to take it again.
00:37
C is what we're talking about here, tolerance, and that's where your body adjusts to the drug.
00:43
Sometimes it's a physiological change.
00:46
Perhaps you metabolize it more rapidly.
00:49
So it could be a faster metabolism of the drug...