Brain function: MJ. Marijuana chronic used can cause some changes in cognition. The literature on this point is mixed and the use has to be frequent and heavy dose. It is psychologically addictive and unfortunately is illegal so you are in technical trouble obtaining it. Current supplies are very potent and you should monitor your response carefully and see if you can get off of it.
Marijuana memory. Cannabis is the most widely used illicit substance and has been associated with cognitive impairment. In a study by grant et al in 2012 young adult volunteers (18-29 years) were recruited from the general community. Compared to non users cannabis users showed significant impairments on quality of decision-making and executive planning. This study identified cognitive deficits in cannabis users.