About 10 percent of the people that use or try weed will get addicted, and it can be severe; just like about 10 percent of the people that use or try alcohol.
And the determinant as to whether they become an addict to either is genetics.
And the determinant as to whether they become an addict to either is genetics.
It depends on how you define "addiction". There are very few physical withdrawal symptoms. There can be some psychological symptoms (ie. craving).
It only requires "treatment" in the same sense that overeating requires treatment. It's something you want to do, but the body doesn't habitate to it.