Perhaps not in the pharmacological sense, but there are changes in the brain as a result of becoming habituated to any activity whether it be gambling, watching pornography, overeating or any of a number of other deleterious activities.
And it's the anticipation of performing the activity (as opposed to the activity itself) that triggers the areas of the brain that are affected by it.
The key to breaking a habit is to find something to substitute it with.
In the case of pot, chemical changes do take place in the brain - and studies are indicating that these changes can be long-term in nature and perhaps irreversible.
So, to say that 'any of them can quit anytime they want to with no problem' is perhaps a little naive and simplistic.
I wouldn't wish any form of addiction or dependency on anyone.
“The key to breaking a habit is to find something to substitute it with.”
This is very true. My best advice to those with such a problem is first ask Jesus Christ to guide you and give you strength, and then find and identify what it is that you love more than you hate yourself, and love that thing. That will heal what ails.
“In the case of pot, chemical changes do take place in the brain - and studies are indicating that these changes can be long-term in nature and perhaps irreversible.”
It has been my personal experience with this drug that such changes do occur with pot use, and that they revert within a few weeks of cessation. They aren’t permanent.
I also agree that habitual pot use, daily heavy use, can promote or exacerbate any mental illness, and this also ceases within a few weeks of cessation.
Doing this drug on any sort of a daily basis is not a good idea at all, but that is really the case for almost anything.
Occasional use of this drug is not going to cause any sort of acute problems outside of the basic health risk of inhaling smoke, which should be considered, as there are consequences to the body.
Never heard of a person robbing a liquor store or selling their body in order so they could buy pot.
While pot is not innocent, it sure isnt crack or heroine.