Marijuana Use Was Not Associated With Reduced Ovarian Reserve, Unlike Tobacco
Among 913 premenopausal women, heavy tobacco smoking and environmental tobacco smoke were associated with lower antimullerian hormone levels (a marker of ovarian reserve), but marijuana use showed no association.
Quick Facts
What This Study Found
Researchers examined whether exposure to combustion products from tobacco, marijuana, and indoor heating sources affected antimullerian hormone (AMH) levels, a biomarker of ovarian reserve (the number of remaining eggs).
Heavy tobacco smoking (20+ cigarettes/day) was associated with a 56.2% reduction in AMH levels compared to nonsmokers. Long-term environmental tobacco smoke exposure (10+ years) was associated with a 31.3% reduction. Indoor burning of wood or artificial fire logs was also associated with lower AMH.
However, marijuana use was not associated with any change in AMH levels. Despite producing combustion by-products similar to tobacco, marijuana did not show the same toxic effect on ovarian reserve.
Key Numbers
913 premenopausal women. Heavy smoking (20+ cigs/day): -56.2% AMH. 10+ years ETS: -31.3% AMH. Wood burning 10+ times/year: -36.0% AMH. Fire logs 10+ times/year: -45.8% AMH. Marijuana: no significant association.
How They Did This
Cross-sectional analysis of 913 premenopausal women (ages 35-54) from the Sister Study cohort (n=50,884). Serum AMH was measured by ultrasensitive ELISA. Exposure to tobacco, marijuana, and indoor heating/cooking sources was assessed by questionnaire.
Why This Research Matters
The finding that marijuana does not appear to affect ovarian reserve (unlike tobacco) is reassuring for women of reproductive age who use cannabis. It suggests that while both substances produce combustion by-products, their effects on reproductive biology differ, possibly due to different active compounds or exposure patterns.
The Bigger Picture
This study adds nuance to the combustion by-product discussion: not all smoke is equally harmful to all organ systems. While marijuana smoke contains many of the same toxic chemicals as tobacco smoke, the ovarian effects appear different, possibly because nicotine has specific vasoconstrictive effects on ovarian blood supply that THC does not share.
What This Study Doesn't Tell Us
Cross-sectional design. Self-reported marijuana use may be underreported. The study could not assess frequency or amount of marijuana use in detail. AMH is one marker of ovarian reserve but does not represent all aspects of reproductive health. The study population (Sister Study) consists of women with sisters who had breast cancer, which may introduce selection bias.
Questions This Raises
- ?Does marijuana affect other markers of female reproductive health?
- ?Would heavy daily marijuana use show an effect not detected in this mixed-frequency sample?
- ?Does the lack of ovarian effect extend to fertility outcomes?
Trust & Context
- Key Stat:
- Marijuana use was not associated with reduced AMH levels, unlike heavy tobacco smoking (-56.2%).
- Evidence Grade:
- Moderate evidence from a well-powered cross-sectional study within a large established cohort, using validated biomarker measurement.
- Study Age:
- Published in 2016. The effects of cannabis on female reproductive health continue to be studied.
- Original Title:
- Antimüllerian hormone in relation to tobacco and marijuana use and sources of indoor heating/cooking.
- Published In:
- Fertility and sterility, 106(3), 723-30 (2016)
- Authors:
- White, Alexandra J(2), Sandler, Dale P(4), D'Aloisio, Aimee A(2), Stanczyk, Frank, Whitworth, Kristina W, Baird, Donna D, Nichols, Hazel B
- Database ID:
- RTHC-01302
Evidence Hierarchy
A snapshot of a population at one point in time.
What do these levels mean? →Frequently Asked Questions
Does marijuana affect fertility?
This study found no association between marijuana use and antimullerian hormone levels (a marker of ovarian reserve). However, AMH is just one aspect of fertility, and this study did not measure pregnancy outcomes or other reproductive parameters.
Why does tobacco reduce ovarian reserve but marijuana does not?
The exact mechanism is unclear, but nicotine has specific vasoconstrictive effects on blood vessels supplying the ovaries. THC does not have the same vascular effects, which may explain why marijuana smoke, despite containing similar combustion by-products, does not appear to damage ovarian reserve.
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-01302APA
White, Alexandra J; Sandler, Dale P; D'Aloisio, Aimee A; Stanczyk, Frank; Whitworth, Kristina W; Baird, Donna D; Nichols, Hazel B. (2016). Antimüllerian hormone in relation to tobacco and marijuana use and sources of indoor heating/cooking.. Fertility and sterility, 106(3), 723-30. https://doi.org/10.1016/j.fertnstert.2016.05.015
MLA
White, Alexandra J, et al. "Antimüllerian hormone in relation to tobacco and marijuana use and sources of indoor heating/cooking.." Fertility and sterility, 2016. https://doi.org/10.1016/j.fertnstert.2016.05.015
RethinkTHC
RethinkTHC Research Database. "Antimüllerian hormone in relation to tobacco and marijuana u..." RTHC-01302. Retrieved from https://rethinkthc.com/research/white-2016-antimllerian-hormone-in-relation
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.