Marijuana (cannabis) is the most widely used illicit drug in many developed societies and the world at large. its health and psychological effects remain the subject of serious contention and much debate- However, debate bordering on the justification for the legalization of cannabis use has polarised public opinions about its possible therapeutic effects while its profound health hazards have become entangled in similar debate. In the light of this, cannabis remains a controversial drug, as debate progresses over its illegal status and whether or not it should be legalised. This debate has raised more dust in recent years following the purported believe in some quarters that cannabis is a potential therapeutic agent for some medical conditions. After alcohol, marijuana ranks as the most pervasive recreational drug in the United States (Johnston, O’Malley, Bachman,&Schulenberg, 2013). In many western societies, cannabis has been widely used and abused by a substantial minority, and in some, a great majority of teenagers and young adults, regardless of whether its use is prohibited bylaw or not. The use of marijuana in the society especially with the young adult population has been on the increase in recent years. Cannabinoid drugs have become an established part of the recreational drug landscape in the United States and progresses globally.
However, empirical and clinical studies clearly demonstrate significant adverse health effects of cannabis consumption on physical and mental health as well as its interference with social and occupational activities.