Marijuana addiction?

In a nutshell, both ? maybe. In other words, there?s currently no clear diagnosis for marijuana addiction [2], but dependence from excessive use can manifest in both physiological and psychological symptoms. Check out Drinking addiction: Psychological or physical? [3] for more info on the differences between psychological dependence and physical dependence. However, keep in mind that dependence to marijuana is actually fairly rare. In fact, there is a nine percent chance that a user will become dependent on marijuana at some point in their lifetime. This makes it pretty unlikely that marijuana use would cause dependence compared to most other drugs, even though it?s one of the most widely used in the world. That being said, the risk of dependence increases with the frequency of use in and other factors like age and genetics (more on that later). Whether the symptoms of dependence are more physiological or psychological can vary between individuals.