Cannabis effects on brain structure, function, and cognition: considerations for medical uses of cannabis and its derivatives.

Burggren Alison C., et al.
The American journal of drug and alcohol abuse, 2019

Abstract

Background

Cannabis is the most widely used illicit substance worldwide, and legalization for recreational and medical purposes has substantially increased its availability and use in the United States.

Objectives

Decades of research have suggested that recreational cannabis use confers risk for cognitive impairment across various domains, and structural and functional differences in the brain have been linked to early and heavy cannabis use.

Methods

With substantial evidence for the role of the endocannabinoid system in neural development and understanding that brain development continues into early adulthood, the rising use of cannabis in adolescents and young adults raises major concerns. Yet some formulations of cannabinoid compounds are FDA-approved for medical uses, including applications in children.

Results

Potential effects on the trajectory of brain morphology and cognition, therefore, should be considered. The goal of this review is to update and consolidate relevant findings in order to inform attitudes and public policy regarding the recreational and medical use of cannabis and cannabinoid compounds.

Conclusions

The findings point to considerations for age limits and guidelines for use.

Keywords

Cannabis; brain; cannabidiol; cognition; endocannabinoid; medical marijuana; morphology; tetrahydrocannabinol.

PMID:31365275
PMCID (Free PMC Article):PMC7027431
DOI:10.1080/00952990.2019.1634086
Category:Brain / Mental Clarity

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