How cannabis and cannabinoids affect reproductive hormones and fertility
THC disrupts the hypothalamic-pituitary-gonadal axis, affecting key reproductive hormones, folliculogenesis, ovulation, and sperm function, though most evidence comes from preclinical studies.
Quick Facts
What This Study Found
THC indirectly decreases GnRH secretion from the hypothalamus, leading to disruptions in multiple reproductive hormones. This affects folliculogenesis, ovulation, and sperm maturation and function. While generally accepted that cannabinoid consumption impacts fertility, most strong evidence comes from preclinical rather than human studies.
Key Numbers
THC affects GnRH, folliculogenesis, ovulation, and sperm function. Cannabinoid receptors are present throughout the reproductive system.
How They Did This
Narrative review of clinical and preclinical evidence on cannabis effects on the endocannabinoid system in reproduction, the hypothalamic-pituitary-gonadal axis, male and female fertility, and teratogenicity.
Why This Research Matters
Cannabis use is highest among young adults of reproductive age. Understanding its effects on fertility is important for those planning families.
The Bigger Picture
The endocannabinoid system plays a natural role in reproduction, and external cannabinoids from cannabis use disrupt this finely tuned system at multiple points.
What This Study Doesn't Tell Us
Strong evidence mostly from animal studies. Human clinical data on fertility outcomes is limited and often confounded by other factors. Dose-response relationships in humans are poorly characterized.
Questions This Raises
- ?At what frequency and dose does cannabis meaningfully impair fertility?
- ?Are effects reversible after stopping cannabis use?
Trust & Context
- Key Stat:
- THC disrupts GnRH, affecting folliculogenesis, ovulation, and sperm function
- Evidence Grade:
- Narrative review with strong preclinical evidence but limited human clinical data on fertility outcomes.
- Study Age:
- Published in 2022.
- Original Title:
- Cannabis and Cannabinoids in Reproduction and Fertility: Where We Stand.
- Published In:
- Reproductive sciences (Thousand Oaks, Calif.), 29(9), 2429-2439 (2022)
- Authors:
- Fonseca, Bruno M(4), Rebelo, Irene
- Database ID:
- RTHC-03847
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
Does cannabis affect male and female fertility equally?
Both are affected but through different mechanisms. THC disrupts folliculogenesis and ovulation in females and sperm maturation and function in males, all stemming from disrupted hormone signaling through the hypothalamic-pituitary-gonadal axis.
Is most of the evidence from humans?
No. While the general impact of cannabinoids on fertility is accepted, most strong evidence comes from preclinical (animal and cell) studies. Human data is limited and often complicated by confounding factors.
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-03847APA
Fonseca, Bruno M; Rebelo, Irene. (2022). Cannabis and Cannabinoids in Reproduction and Fertility: Where We Stand.. Reproductive sciences (Thousand Oaks, Calif.), 29(9), 2429-2439. https://doi.org/10.1007/s43032-021-00588-1
MLA
Fonseca, Bruno M, et al. "Cannabis and Cannabinoids in Reproduction and Fertility: Where We Stand.." Reproductive sciences (Thousand Oaks, 2022. https://doi.org/10.1007/s43032-021-00588-1
RethinkTHC
RethinkTHC Research Database. "Cannabis and Cannabinoids in Reproduction and Fertility: Whe..." RTHC-03847. Retrieved from https://rethinkthc.com/research/fonseca-2022-cannabis-and-cannabinoids-in
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.