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Warning ⚠️

• This article is for informational and scientific purposes only and does not encourage or incite any illegal use of cannabis.
  
• In Taiwan, marijuana is classified as a Class II controlled substance, and possession, use, or sale are all illegal.

I. Introduction: Culture, Phenomena, and Research Motivation

" Having sex with marijuana " refers to engaging in sexual activity after using marijuana . Many people describe the experience as relaxing, sensory-enhancing, and with increased orgasm. International research over the past five years (2020–2025) has begun to explore the link between marijuana and sex from the perspectives of psychology, physiology, and neuroscience, including libido, sexual function, sexual satisfaction, and emotional connection.

II. How does cannabis affect libido and sexual function?

The active ingredients of cannabis , THC (Δ⁹-tetrahydrocannabinol) and CBD (cannabidiol) , act on the endocannabinoid system (ECS) to regulate mood, pain, libido, hormones, and pleasure.

1. Libido

In 2023, among 300 respondents in the United States, approximately 62% reported increased libido after low-dose cannabis use, with a slightly higher percentage of women than men. Low-dose THC can enhance intimacy through dopamine release and reduced anxiety.

2. Sexual Function

Studies using the IIEF and FSFI scales have found that low-dose THC can improve erection and endurance in men, while high doses or long-term use may lead to erectile dysfunction and decreased libido; low to medium doses in women can increase sexual arousal and vaginal blood flow, but excessive doses can increase fatigue and distraction.

3. Orgasm and Satisfaction

The 2024 Mulvehill study indicated that women experienced a significant increase in orgasm frequency and satisfaction after using low-dose THC , while the difference was not significant in men. This is attributed to the enhanced dopamine release from the hypothalamus and limbic system caused by THC.

III. Neuroscience Mechanism Analysis

CB1 receptors and brain regions

• Hypothalamus : Controls sex hormones and libido. THC stimulation of CB1 receptors can temporarily increase sexual arousal.
• Hippocampus : The center of memory and emotion. Moderate stimulation enhances emotional connection and pleasurable memories in partners; high doses may cause decreased attention.
• The limbic system is the center of emotion and reward. Activation of CB1 receptors can enhance feelings of pleasure and intimacy, but overstimulation may lead to emotional desensitization.

Sensory amplification phenomenon

THC affects the secretion of dopamine and oxytocin through ECS and CB1 receptors, which prolongs the sense of time, enhances tactile sensitivity, and improves emotional focus, producing a "pleasure amplification" effect.

IV. Gender differences and dose effect

gender	Low dose effect	High dose effect
female	Increased libido, easier to achieve orgasm, and enhanced sexual satisfaction	Fatigue, decreased attention, and partial sexual dysfunction
male	Slight increase in libido, improved erection and stamina	Erectile dysfunction, decreased libido, and reduced sperm motility

Frequency of use has a significant impact: occasional users experience more positive effects, while long-term heavy users may develop dependence and adverse effects.

V. Psychological, Social, and Public Health Perspectives

Cannabis can reduce anxiety and shyness, and enhance communication and intimacy between partners, but impaired judgment may increase high-risk sexual behaviors, such as ignoring safety measures. Educating about safe sex remains a public health priority.

VI. Legal and Health Reminders

• Taiwanese law classifies marijuana as a Schedule II controlled substance; possession, use, and sale are all illegal.
• Health risks: Excessive or prolonged use may lead to sexual dysfunction, psychological dependence, and cognitive decline.
• Scientific significance: The content of this article is for educational and research purposes only and is not intended for use.

VII. Conclusion

Cannabis temporarily enhances libido, sensory acuity, and intimacy through the ECS and CB1 receptors.

The effect is affected by dosage, gender, frequency of use and psychological state.

Understanding human responses is beneficial for education, mental health, and neuroscience research, rather than serving as a user guide.

Legal and health risks in Taiwan cannot be ignored.