To deal with the problems associated with cannabis use, it is important to understand what causes some individuals to initiate cannabis use and what causes some of those individuals to become regular users or become dependent on it. Though there may be some completely random events that cause people to vary in their cannabis use (such as changes in availability of the drug), much of the variability is likely to be due both to the nature of the environment they live in and developed in, and to their genetic makeup.
