Since the 1980’s, the University of Pittsburgh Medical Center along with Rutgers University has been studying 14-year-old males in public schools and have published a study in the Psychology of Addictive Behaviors. These teenagers were tracked by a database until around 2009-2010, where they were about thirty-six-years-old. The study conducted was to find the “physical and mental health conditions, such as asthma, depression, high blood pressure, and psychotic illnesses.”

The teenagers were broken into 4 groups for the experiment. The biggest group was composed of those who did not use marijuana (46%). Next was early chronic users (22%), late-teenagers who proceeded to smoke pot throughout the lives (21%), and those that only smoked marijuana once (11%). According to the studies, there was no large difference in physical health or mental health that were found in any of the four groups throughout the last three decades. Moreover, even if certain “controls are not accounted for,” researches stated that chronic pot smokers did not have any worse health conditions than any of the other groups being studied.

Both universities’ researchers made it clear that this study does not apply to all marijuana users but brings us a step closer to learning whether or not marijuana is safe for the long-term. In addition, they also stated that the intellectual and mental results of cannabis are not portrayed by this experiment and still need to be tested as possibly having negative effects on smokers over the long-term.


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