The marijuana plant has been in existence for centuries, and people have in the past used it for recreational purposed. However, the US government illegalized the use of both industrial and recreational use of marijuana and was thereby categorized as a narcotic drug. The National Institute on Drug Abuse (NIDA) defines marijuana as a green-grayish mixture of the cannabis sativa flowers. Although for almost a century marijuana has been seen as an illegal hard drug that is banned by the federal government and many other nations, recent research has put some light on the use of marijuana for medical purposes. This breakthrough might change the view on marijuana and may have numerous advantages to the people and the economy at large. However, just like any other medicine, the misuse of marijuana has been proved to have adverse health effects on those consuming it as well as the passive inhalers.