“The Impact of Cannabis Abuse on cognition: a comprehensive Review”

Abstract

Introduction: This review article explores the multifaceted impact of cannabis abuse on cognition, encompassing various aspects such as attention, perception, memory, motor skills, executive functioning, and language skills. The primary psychoactive component responsible for these effects is delta-9-tetrahydrocannabinol (THC), with its immediate impact felt post-smoking. The age of initiation plays a crucial role, with earlier use linked to more significant cognitive impairment, particularly during adolescence. Studies have shown that THC exposure in adolescent rats affects memory, while chronic use in adults leads to depressive behaviour. Human studies suggest temporary cognitive impairments in attention, executive functions, and learning among cannabis users, especially in young adults. Cannabis intoxication compromises attention and creates biases, with sub-acute effects on learning and memory. However, research indicates potential recovery with abstinence. Decision-making is also influenced by cannabis use, with studies revealing altered risk-taking behaviours. Context and emotion play a vital role, with peer influence, stress, and emotional processing impacting cognitive performance.