Oxytocin is often called the "love hormone." It's released during touch, trust, security, and close relationships – when we form bonds with other people and animals. Oxytocin helps us create attachment, but modern research reveals something important:
Oxytocin alone doesn't create the feeling of social reward.
Swedish oxytocin researcher Kerstin Uvnäs-Moberg describes oxytocin's role like this:
"Oxytocin is a hormone for calm, love and healing."
But how does this signal become an actual feeling experience in the body?
The Crucial Link: The Endocannabinoid System
The body contains the endocannabinoid system – a biological regulatory system that helps the body maintain balance in the nervous system, which in turn controls everything.
The system uses the body's own signaling substances that resemble cannabinoids from plants. One of the most important is anandamide, sometimes called "the bliss molecule."
And here comes the crucial discovery.
What Research Clearly Shows
The well-cited study "Endocannabinoid signaling mediates oxytocin-driven social reward" (PNAS, 2015) demonstrates that:
- Oxytocin is released during positive social contact
- Oxytocin increases anandamide levels in the brain
- Anandamide activates cannabinoid receptors (CB1)
- This is necessary for social contact to be experienced as rewarding
The researchers summarize this clearly:
"An oxytocin-dependent endocannabinoid signal contributes to the regulation of social reward."
In other words: Oxytocin sends the signal of security while the endocannabinoid system makes the signal perceptible.
Without this system, the rewarding feeling of social closeness disappears.
Scientific Highlight
Oxytocin creates social attachment, but the endocannabinoid system – via anandamide – is necessary for social contact to be experienced as rewarding.
(Source: Wei et al., 2015, PNAS – PMC4653148)
Where Does CBD Come In?
CBD (cannabidiol) is not oxytocin and doesn't create attachment by itself. However, CBD interacts indirectly with the endocannabinoid system.
Research shows that CBD can:
- Support the body's own levels of anandamide
- Contribute to balance in stress and emotion-regulating circuits
- Promote the body's natural recovery processes
(Source: D'Souza et al., 2022, American Journal of Psychiatry)
Kerstin Uvnäs-Moberg describes oxytocin's effects like this:
"Activation of the oxytocin system produces anti-stress effects, increased calm, and a sense of security."
CBD can be seen as a way to support the same biological system that oxytocin uses, naturally, without pushing the body in any direction.
Brief Summary
- Oxytocin signals security, closeness, and attachment
- The endocannabinoid system makes these signals perceptible
- CBD can support this system by promoting the body's own balance
References
- Wei D. et al. (2015). Endocannabinoid signaling mediates oxytocin-driven social reward. PNAS. PMC4653148
- Uvnäs-Moberg K. (1998). Oxytocin may mediate the benefits of positive social interaction and emotions. Psychoneuroendocrinology
- Uvnäs-Moberg K. (2003). The Oxytocin Factor.
- D'Souza D.C. et al. (2022). Cannabidiol modulates the effects of Δ9-tetrahydrocannabinol. American Journal of Psychiatry.
Scientific Disclaimer
The mechanisms described in this article are largely based on preclinical research and observational studies. The relationships between oxytocin, the endocannabinoid system, and CBD are complex and not yet fully understood in humans. At the same time, clinical studies in this area are ongoing, some of which have reached later research phases and reported promising and interesting results. These data are still subject to scientific review and publication. The information in this article is intended for educational purposes and should not be interpreted as health claims.
