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The mental health effects of cannabis use 

The mental health effects of cannabis use
Chapter:
The mental health effects of cannabis use
Author(s):

Wayne Hall

DOI:
10.1093/med/9780199696758.003.0068
Page of

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date: 18 August 2019

The major adverse acute psychological effects of cannabis use are as follows: ♦ Anxiety, dysphoria, panic, and paranoia, especially in naive users ♦ Impairment of attention, memory, and psychomotor performance while intoxicated ♦ An increased risk of accident if an intoxicated person attempts to drive a vehicle. The major psychological effects of daily heavy cannabis use over many years remain contested but probably include the following: ♦ A cannabis-dependence syndrome ♦ Subtle forms of cognitive impairment that affect attention and memory and which persist while the user remains chronically intoxicated ♦ Impaired educational achievement in adolescents with a history of poor school performance, whose achievement may be limited by the cognitive impairments produced by chronic intoxication with cannabis ♦ Among those who initiate cannabis use in the early teens, a higher risk of progressing to heavy cannabis and other illicit drug use, and becoming dependent on cannabis.

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