Marijuana is the most commonly abused drugs in United States. Especially, after its legalization in certain states, the use has increased even further. It is quite easy to access marijuana as compared to other drugs. The use of marijuana has been known to cause a number of physical and mental side effects. Contrary to popular belief, regular use of marijuana can produce symptoms of dependence. There are some medical uses of marijuana such as pain relief and appetite stimulation but its recreational use is more widespread.