What are, if any, the negative effects of regular marijuana consumption?

Well, according to a comprehensive review published Wednesday in the journal Addiction, cannabis use can lead to small or to moderate acute cognitive impairments that can persist after the period of intoxication, reported MedicalXpress.

The study was conducted by the research center of the Institute Universitiaire En Santé Mentale De Montréal in Canada. The study was a meta-review, meaning a review of reviews – merging the results of 10 meta-analyses with a total of 43,000 participants.

While meta-analysis is a powerful tool, a National Center for Biotechnology Information (NCBI) study cautioned that meta-analyses can be controversial tools that may lead to misleading conclusions in that “decisions made when designing and performing a meta-analysis require personal judgment and expertise, thus creating personal biases or expectations that may influence the result.”

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