Male vs Female Cannabis Effects: How Sex Impacts Response

Historically, cannabis use has been more common among males, but the gap is closing as more females turn to cannabis for both medical and recreational purposes. However, research¹ shows that males and females can experience cannabis in very different ways due to variations in biology — particularly in the endocannabinoid system (ECS).

Key Takeaways

• Sex-based biology influences cannabis effects and side effects
• Males have more CB1 receptors in the central nervous system (CNS)
• Females have fewer CB1 receptors but higher binding efficiency
• THC effects tend to be stronger and longer-lasting in females
• Females may experience greater pain relief but more side effects
• Cannabis can decrease libido in males and increase it in females
• Research on driving impairment shows mixed results by sex

Factors That Influence Cannabis Response

Several variables impact how someone experiences cannabis, including the strain or chemovar, dosage, frequency of use, environment, and even placebo effects. At a physiological level, differences may stem from gonadal hormones and the structure and function of the ECS.

Research shows that the ECS is not identical between males and females. These differences can influence everything from mood changes to pain relief, appetite, and sexual behavior.

Cannabinoid Receptor Differences

According to a 2011 review² published in Behavioural Neuroscience, males generally have more CB1 receptors in brain regions such as the hippocampus, amygdala, hypothalamus, and cortex. Females, however, exhibit stronger CB1 receptor–G protein coupling, meaning their receptors may be more efficient.

CB1 receptors are primarily responsible for the psychoactive effects of cannabis and are the same sites where the body’s own cannabinoid, anandamide, binds.

Sex Differences in THC Metabolism

THC is broken down differently in males and females. Females produce higher levels of 11-OH-Δ9-THC, a potent metabolite that prolongs psychoactive effects. Males generate this metabolite along with three others that reduce potency, potentially leading to shorter-lived effects.

Recent Findings on Pain and Side Effects

A 2021 study³ confirmed significant sex-based differences in ECS expression in CNS areas linked to pain and anxiety regulation. Another cross-sectional study⁴ found females were more likely to experience adverse effects from medical cannabis compared to males.

Summary of Sex-Based Cannabis Effects

Conclusion

Males and females differ in both the structure and function of their ECS, which affects how they experience cannabis. These differences can influence potency, side effects, and therapeutic outcomes. However, much of the existing research is preliminary, and there is still a lack of data on female cannabis users. More studies are needed to guide effective and personalized cannabis use for medical and recreational purposes.

References:

<sup>1. Cooper, Z., Craft, R. Sex-Dependent Effects of Cannabis and Cannabinoids: A Translational Perspective. Neuropsychopharmacol. 43, 34–51 (2018). https://doi.org/10.1038/npp.2017.140
2. Rubino T, Parolaro D. Sexually dimorphic effects of cannabinoid compounds on emotion and cognition. Front Behav Neurosci. 2011 Sep 28;5:64. doi: 10.3389/fnbeh.2011.00064. PMID: 21991251; PMCID: PMC3181427.
3. Levine, A., Liktor-Busa, E., Lipinski, A.A. et al. Sex differences in the expression of the endocannabinoid system within V1M cortex and PAG of Sprague Dawley rats. Biol Sex Differ 12, 60 (2021). https://doi.org/10.1186/s13293-021-00402-2
4. Aviram, Joshua; Lewitus, Gil M.; Vysotski, Yelena; Berman, Paula; Shapira, Anna; Procaccia, Shiri; Meiri, David*. Sex differences in medical cannabis-related adverse effects. PAIN 163(5):p 975-983, May 2022. | DOI: 10.1097/j.pain.0000000000002463</sup>