Does weed do this too?

[notrightquite]

this has nothing to do with physically addictive.....this is all about your brain...
i hope your being sarcastic...

What im sayin is....Can weed prevent your brain from feeling as much joy as it once did?

First thing before you get into this, is that you need to know the difference between physiology and psychology. If something is physically addictive, it can very well have to do with your brain. What Coke does is physically addicting. Psychologically addictive is mostly just a way of saying it's a habit and you like it. Just remember that the brain is a physical organ.