Skip to content

The Science of Cannabis Hangovers: Fact or Fiction?

The concept of a "cannabis hangover" is a topic of much debate within the cannabis community and among researchers. Unlike the well-documented aftereffects of alcohol consumption, the idea of a hangover from cannabis use is less understood and often based on anecdotal evidence.

This blog delves into what science says about cannabis hangovers, exploring whether they are a real phenomenon or just a myth.

Understanding Cannabis Hangovers

A "cannabis hangover" refers to the residual effects felt by some individuals the day after consuming cannabis, particularly in large amounts. Users report various symptoms, including lethargy, brain fog, dry eyes, headache, and mild nausea. But how do these anecdotal reports stand up against scientific scrutiny?

What Research Says

Scientific research on cannabis hangovers is sparse, but a few studies have attempted to shed light on this phenomenon. One study published in the journal Pharmacology, Biochemistry, and Behavior in 1985 found that participants who consumed high doses of cannabis experienced subtle hangover effects the next day, such as impaired performance on behavioral tasks. However, the study's small sample size and its focus on high-dose consumption make it difficult to generalize the findings to all cannabis users.

Comparing Cannabis and Alcohol Hangovers

It's crucial to differentiate between cannabis and alcohol hangovers. Alcohol hangovers are well-researched and are known to result from dehydration, immune system effects, glucose metabolism disturbances, and other factors. Cannabis, on the other hand, does not produce the same metabolic or dehydration effects as alcohol, suggesting that if cannabis hangovers exist, they likely have a different underlying mechanism.

Potential Causes of Cannabis Hangovers

If cannabis hangovers exist, what might cause them? One theory is that they result from the disruption of sleep architecture. While cannabis is often used as a sleep aid, it can affect the REM cycle and other aspects of sleep, potentially leading to feelings of tiredness the next day. Another theory is that residual THC in the system could contribute to next-day grogginess, especially with potent strains or edibles that have longer-lasting effects.

Mitigating Factors

Several factors could influence the presence or severity of a cannabis hangover, including:

  • Dosage: Higher consumption levels are more likely to lead to hangover symptoms.

  • Consumption Method: Edibles, for example, have a longer duration of effect, which might contribute to next-day symptoms.

  • Individual Tolerance: Personal biochemistry plays a significant role in how one experiences the effects of cannabis.

  • Strain Type: Different strains have varying levels of THC and CBD, which could impact hangover experiences.


While anecdotal evidence suggests that cannabis hangovers can occur, scientific research on the topic remains limited. More comprehensive studies are needed to understand the prevalence, causes, and mechanisms of cannabis hangovers fully. For now, cannabis users should pay attention to their bodies and consumption habits, and as with all substances, moderation is key.

As the scientific community continues to explore the intricacies of cannabis and its effects on the human body, users are encouraged to consume responsibly and stay informed about the latest research to make educated decisions about their use of cannabis.

Have you ever experienced a cannabis hangover, and what strategies do you use to mitigate its effects?


Your cart is currently empty.

Start Shopping

Select options