How Cannabis, Cocaine, and Ecstasy Each Affect Sleep Differently | Research

The takeaway

Cannabis helps users fall asleep faster and increases deep sleep, but withdrawal causes insomnia and vivid dreams; cocaine and ecstasy primarily disrupt sleep through arousal.

Read this if you use cannabis for sleep and want to understand what happens to your sleep when you stop.

Cannabis withdrawal sleep disturbance is among the most consistently reported symptoms

What the researchers found

This review compared the sleep effects of three illicit drugs.

Cannabis: Acute use facilitated sleep onset and increased Stage 4 (deep) sleep while reducing REM sleep. Cannabis withdrawal produced insomnia, strange dreams (possibly reflecting REM rebound), longer sleep onset, reduced slow-wave sleep, and increased REM sleep. These withdrawal sleep disturbances were among the most consistently reported withdrawal symptoms.

Cocaine: Acute use increased wakefulness and suppressed REM sleep. Withdrawal was associated with sleep disturbances and unpleasant dreams. Objectively measured sleep actually worsened during sustained abstinence even though patients reported sleep improvement.

Ecstasy (MDMA): Heavy use was associated with persistent sleep disturbances. Abstinent heavy users showed altered sleep architecture on polysomnography, consistent with MDMA's effects on the serotonin system.

Why it matters

Sleep disturbance is a major factor in substance use relapse. Understanding how each drug specifically alters sleep helps clinicians address sleep problems during treatment and withdrawal.

The numbers in context

Cannabis: increased Stage 4 sleep, reduced REM sleep acutely. Cannabis withdrawal: insomnia, vivid/strange dreams, REM rebound. Cocaine: increased wakefulness, REM suppression. MDMA: altered sleep architecture in abstinent heavy users.

How the study worked

Narrative review of published polysomnography studies and clinical reports examining the effects of cannabis, cocaine, and MDMA on sleep architecture during use and withdrawal.

What this study cannot tell us

Many studies had small samples. Polysubstance use complicates attribution. Duration of sleep effects after cessation varied across studies. The review predated many larger studies on cannabis and sleep.

How to read the evidence

This is a narrative review synthesizing polysomnography studies, providing moderate evidence about sleep effects though individual study quality varied.

When this study was published

Published in 2008. Research on cannabis and sleep has expanded significantly, with more nuanced findings about dose, strain, and individual differences.

The bigger picture

The finding that cannabis withdrawal-related sleep disturbance is among the most consistent withdrawal symptoms has influenced the inclusion of sleep problems in cannabis withdrawal diagnostic criteria (DSM-5).

Questions still open

Do cannabis-related sleep disturbances during withdrawal predict relapse? Could targeted sleep treatments improve cannabis cessation outcomes?

Common questions

Does cannabis help with sleep?

Acutely, cannabis appears to help people fall asleep faster and increases deep sleep. However, it reduces REM sleep, and stopping use can cause significant insomnia and vivid dreams. Long-term effects on sleep quality remain debated.

How long do sleep problems last after stopping cannabis?

This review documented sleep disturbances during cannabis withdrawal but noted the exact duration varies. Other research suggests sleep problems can persist for days to weeks after stopping regular use.

Read the original research

Effect of illicit recreational drugs upon sleep: cocaine, ecstasy and marijuana.

Sleep medicine reviews, 12(5), 381-9

View on PubMed ↗Publisher’s paper ↗

Citation

Schierenbeck, Thomas; Riemann, Dieter; Berger, Mathias; Hornyak, Magdolna. (2008). Effect of illicit recreational drugs upon sleep: cocaine, ecstasy and marijuana.. Sleep medicine reviews, 12(5), 381-9. https://doi.org/10.1016/j.smrv.2007.12.004