If you've spent any time in PCOS forums or LGBTQIA+ health spaces, you may have come across a claim that sounds almost too specific to be made up: that lesbian and bisexual women are more likely to have PCOS. It gets repeated as a fact, sometimes with a wink, sometimes as a punchline about "gay hormones." Neither is fair to the actual research, and neither is fair to you if you're a lesbian or bisexual woman trying to work out what's going on with your own cycle, skin or bloodwork.

Here's the honest version. A small number of older studies did find some association between markers of higher androgen exposure and same-sex attraction in women, and one of those studies looked specifically at PCOS. That research is real. It is also decades old, built on small samples, and nowhere near strong or replicated enough to call this settled science. Meanwhile, the reason so few people can point you to a clear answer isn't because nobody's curious. It's because LGBTQIA+ women's reproductive health has been chronically under-researched and underfunded, which is its own quiet failure.

This article walks through what the research actually found, why it doesn't mean what a headline might imply, and what genuinely matters if you're a lesbian or bisexual woman wondering about your own PCOS risk. It also covers something more immediately useful: the real barriers lesbian and bisexual women can face when trying to get taken seriously by a GP in the first place.

It's also worth saying upfront that most of the existing research talks about "lesbian women" as a single, tidy category, which flattens a lot of real variation. Bisexual women are rarely studied as their own group at all, and where they are, sample sizes shrink even further. So when you see a claim like "lesbians are more at risk of PCOS," treat it as shorthand for a much messier, much smaller and much less certain body of work than the sentence implies.

You're not a research curiosity. You're a person who deserves a straight answer, so let's get into it.

What does the research actually say about PCOS and sexual orientation?

Short answer: A handful of small studies from the 1990s and 2000s found possible links between higher androgen markers and same-sex attraction in women, but the evidence is limited and far from conclusive.

There are two strands of research that usually get tangled together when this topic comes up, and it's worth separating them.

The digit ratio studies

The first strand looks at what's known as digit ratio, specifically the relative length of your index finger compared to your ring finger (often written as 2D:4D). This ratio is thought to be influenced by androgen exposure in the womb, with a lower ratio (a comparatively longer ring finger) associated with higher prenatal androgen exposure. A well-known study published in the journal Nature in 2000 by Terrance Williams and colleagues compared digit ratios between self-identified lesbian and heterosexual women and found that, on average, the lesbian group had digit ratios that were more "masculinised," meaning closer to the typical male pattern.

The researchers interpreted this as indirect evidence that prenatal androgen exposure may play some role in the development of sexual orientation in women. That's a reasonable hypothesis to raise. It is not the same as proof, and digit ratio is, at best, an indirect proxy for something that happened once, before birth. It tells you nothing about your hormone levels now.

This sits within a broader, older field of research often called the "prenatal hormone theory," which has also looked at digit ratio in relation to handedness, spatial reasoning and other traits, with mixed and inconsistent results across different research teams. Some follow-up studies have replicated a small digit-ratio difference between lesbian and heterosexual women; others have found no meaningful difference at all. That inconsistency is normal for this kind of small, indirect, population-level research, but it's also exactly why nobody should present it as a settled explanation for anything, sexuality or otherwise.

The PCOS-specific study

The second, more directly relevant strand is a UK study published in Fertility and Sterility in 2004 by Rina Agrawal and colleagues, which compared rates of polycystic ovaries on ultrasound and testosterone levels between a small group of lesbian women and a small group of heterosexual women. The study reported a higher prevalence of polycystic ovary appearance and higher testosterone levels in the lesbian group. This is the piece of research that the old "lesbians and PCOS" narrative usually traces back to, and it is a real, published study, not internet folklore.

What it is not is a large, well-replicated finding that's made its way into clinical guidelines. It hasn't. No major PCOS diagnostic framework, including the Rotterdam criteria used worldwide, references sexual orientation as a risk factor.

The real limitations, laid out plainly

• Small sample sizes. These studies typically involved dozens of participants, not thousands, which makes it hard to know how well the findings generalise.
• Self-selected participants. Volunteers who respond to a study advert about sexuality and hormones may not represent lesbian or bisexual women as a whole.
• Indirect proxy markers. Digit ratio is a stand-in for prenatal hormone exposure, not a direct measurement of anyone's current androgen levels.
• Dated research with a modern replication gap. Some of this work is now over two decades old, and it hasn't been repeated at scale with modern diagnostic tools.
• Correlation treated as if it explains causation. Even where an association was found, none of these studies can tell you which came first, or whether something else entirely explains both.

Why is this research area so small in the first place?

Short answer: LGBTQIA+ women's reproductive health has historically received comparatively little funding or research attention, so questions like this one have rarely been properly resourced.

This is the part of the old article title worth taking seriously: "is science still failing our LGBTQIA+ community?" In this specific area, yes, in a fairly unglamorous way. It's not a dramatic cover-up. It's a funding and priority problem.

A 2011 report from the US Institute of Medicine, "The Health of Lesbian, Gay, Bisexual, and Transgender People," reviewed the state of LGBTQIA+ health research and found substantial gaps, particularly around lesbian and bisexual women's reproductive and gynaecological health. Researchers simply hadn't asked, funded or tracked these questions with anything like the attention given to more heavily studied areas of women's health.

That gap compounds itself. Fewer studies mean fewer researchers building careers in the area, which means fewer grant applications, which means fewer studies. Add to that a long history of clinical research assuming a heterosexual, cisgender default patient, and you end up with exactly what we have here: two small, ageing studies standing in for what should be a much broader body of evidence.

This shows up beyond PCOS too. Cervical screening uptake tends to be lower among lesbian and bisexual women, partly because of assumptions (sometimes from clinicians, sometimes internalised) that screening matters less without penetrative sex with men. Fertility services have historically been built around heterosexual couples trying to conceive, leaving lesbian and bisexual women navigating a system that wasn't designed with them in mind. None of this points to a single villain deliberately excluding anyone. It's what happens, cumulatively, when a population is treated as a footnote rather than a priority for decades.

Hormonal literacy isn't complicated. It's just rarely taught, and it's taught even less when the population in question has historically been left out of the room where research priorities get decided.

Does a low finger-length ratio or a hormone test explain someone's sexuality?

Short answer: No single biological marker explains sexual orientation, which involves social, psychological and biological factors working together in ways researchers don't fully understand.

This is worth stating plainly, because it's the point where a lot of "gay hormones" content goes wrong. Even the researchers behind the digit ratio and androgen-exposure hypotheses have never claimed that prenatal hormone exposure is the sole explanation for who someone is attracted to. Human sexuality is genuinely complex, shaped by biology, upbringing, culture, psychology and personal experience in ways that resist being reduced to a single measurement.

If you're a lesbian or bisexual woman, your sexuality is not something a hormone panel is trying to explain, justify or diagnose. It isn't a symptom. It isn't a side effect of your androgen levels. It's simply who you are, and no blood test result changes that or needs to account for it.

This matters clinically too. If a small association between androgen markers and sexual orientation genuinely exists at a population level, it still says nothing reliable about any one individual. Plenty of heterosexual women have higher androgen levels or textbook polycystic ovaries on a scan. Plenty of lesbian and bisexual women have neither. Population-level correlations, even solid ones, don't predict individual biology, and these particular correlations aren't solid to begin with.

What actually determines your PCOS risk?

Short answer: Family history, insulin resistance and certain ethnic backgrounds are far more established PCOS risk factors than anything linked to sexual orientation.

If you're trying to work out your own personal PCOS risk, the sexuality-linked research isn't where to focus your attention. Here's what the well-established evidence actually points to.

Well-established risk factors

• Family history. Having a mother, sister or close relative with PCOS meaningfully raises your own likelihood of developing it, pointing to a genetic component.
• Insulin resistance. Cells that respond poorly to insulin push the body to produce more of it, which can drive up androgen production and disrupt ovulation.
• Ethnic background. Some populations, including South Asian women, show somewhat higher documented prevalence and can present with more pronounced insulin resistance and symptoms at a younger age.
• Weight changes, particularly around puberty. Weight gain can worsen insulin resistance and androgen symptoms, though PCOS also affects plenty of women at a lower body weight.

Contested, sexuality-linked research

• A small number of older studies suggesting a possible statistical association between prenatal androgen exposure markers and same-sex attraction.
• One small UK study reporting higher rates of polycystic ovaries and testosterone in a lesbian cohort compared with a heterosexual comparison group.
• Not referenced in any major PCOS diagnostic guideline. Not something any GP should use to raise or lower your risk assessment.

The research on this is actually pretty clear: the Rotterdam criteria, the internationally used diagnostic standard for PCOS, are the same regardless of who you're attracted to. Diagnosis requires meeting two out of three features: irregular or absent ovulation, clinical or biochemical signs of higher androgens (such as hirsutism or raised testosterone on bloodwork), and polycystic-appearing ovaries on ultrasound. Your sexuality plays no role in that assessment, and it shouldn't.

What barriers do lesbian and bisexual women face when trying to get diagnosed?

Short answer: Assumptions about contraception, fertility needs and disclosure comfort can lead to less thorough symptom investigation for lesbian and bisexual patients.

This is the part of the topic that will likely affect you far more directly than any historical research debate, so it deserves real weight. In practice, lesbian and bisexual women can run into a specific set of barriers when trying to get PCOS symptoms taken seriously.

• Contraception-based questioning. A lot of PCOS symptom screening in general practice happens almost by accident, during a conversation about starting or switching contraception. If a clinician assumes you don't need contraception, or doesn't ask, that entry point into investigating irregular cycles can simply not happen.
• Fertility assumptions. Clinicians may assume fertility isn't a current concern for a lesbian patient and deprioritise cycle or hormone-related questions as a result, even though plenty of lesbian and bisexual women are actively trying to conceive or plan to in future.
• Less thorough symptom investigation. Symptoms like acne, excess hair growth or irregular periods can get attributed to "just how your body is" rather than properly investigated, particularly if a consultation feels rushed.
• Discomfort disclosing sexuality. Not every GP appointment feels like a safe place to be open about who you are, and some patients understandably hold back information that could otherwise help build a fuller clinical picture.
• Assumptions about who asks about PCOS. PCOS is still often framed publicly as a fertility-and-weight condition for women trying to get pregnant with a male partner, which can make lesbian and bisexual women feel like the condition, or the conversation about it, simply isn't aimed at them.

None of this means every appointment will go badly, and plenty of GPs are thoughtful and thorough regardless of who's in front of them. But if you've felt brushed off, it's worth knowing that isn't unique to you, and it isn't a reason to stop pushing for proper investigation. Your diagnosis is a starting point, not a verdict, and it's worth getting a proper one, whatever it says.

What can help in practice

• Name your symptoms directly, not just your relationship status. You don't need to explain or justify your sexuality to describe irregular cycles, acne or excess hair growth. Lead with the symptoms.
• Ask for the specific tests. A proper PCOS work-up usually includes bloodwork (testosterone and related hormones) and a pelvic ultrasound. If a GP hasn't mentioned either, it's reasonable to ask why.
• Say plainly if fertility matters to you. If you're trying to conceive, plan to in future, or simply want your reproductive health managed properly regardless, say so. Don't wait to be asked.
• Request a second opinion if something feels dismissed. You're allowed to ask to see a different GP or be referred to a gynaecologist if you feel your symptoms weren't properly investigated the first time.

MyOva's supplements are formulated for anyone managing PCOS symptoms, regardless of sexual orientation or gender identity. You can read more about how PCOS is diagnosed and what the condition actually involves at myovacare.com/pages/whats-pcos.

Frequently Asked Questions

Is there a link between being a lesbian and having PCOS?
Some small, older studies have suggested a possible statistical association between higher androgen markers and same-sex attraction in women, and one small study found higher PCOS-related traits in a lesbian sample. This research is limited, dated and not well replicated, so it shouldn't be treated as an established medical fact.

Does sexuality affect hormone levels?
There's no solid evidence that sexuality itself changes your current hormone levels. The research in this area looks at whether early androgen exposure may play some role in the development of sexual orientation, which is a different question from whether being lesbian or bisexual affects your hormones day to day. If you're lesbian or bisexual and get bloodwork done, expect the same reference ranges and the same interpretation as anyone else.

Can a hormone test or a finger-length ratio tell you anything about your sexual orientation?
No. These are, at most, indirect and contested markers studied at a population level in small research samples. They can't tell an individual anything reliable about their own sexuality, and no clinician should use them to.

Why is there so little research on LGBTQIA+ women's health?
LGBTQIA+ health research, particularly on cisgender women's reproductive health, has historically received less funding and attention than other areas of medicine. That's a resourcing and priority failure, not a sign the questions don't matter.

What should a lesbian or bisexual woman know about getting a PCOS diagnosis?
The same Rotterdam diagnostic criteria apply to everyone, regardless of sexuality. Ask your GP directly about irregular cycles, hirsutism, acne or other symptoms, request bloodwork and an ultrasound if appropriate, and don't let assumptions about contraception or fertility needs limit the investigation.

Does having PCOS say anything about a person's sexuality, or the other way round?
No. PCOS is a hormonal and metabolic condition that affects women across every sexual orientation. Having PCOS doesn't indicate anything about who someone is attracted to, and being lesbian or bisexual doesn't mean someone will or won't develop PCOS.

Conclusion

The honest answer to "are lesbian and bisexual women more at risk of PCOS" is that a small body of dated, limited research has explored a possible association, and it has never been strong or well-replicated enough to treat as settled. What is well established is that PCOS risk comes down to family history, insulin resistance, certain ethnic backgrounds and other genuinely documented factors, applied through the same Rotterdam criteria for every patient, whatever her sexuality.

What's arguably more useful than the research debate itself is this: if you're a lesbian or bisexual woman and you've felt like your symptoms weren't taken seriously, or that a consultation skipped past questions it should have asked, that's a real and common experience, not a personal failing. You're not imagining it, and you're allowed to ask for a proper, thorough assessment, on the same terms as anyone else.

Your sexuality isn't a research question waiting for a biological explanation. It's simply part of who you are, and it deserves to sit entirely outside any conversation about your hormone panel.

Further Reading

• How PCOS Is Actually Diagnosed
• What Is PCOS? The Basics Explained

References

1. Williams TJ, Pepitone ME, Christensen SE, et al. Finger-length ratios and sexual orientation. Nature. 2000;404(6777):455-456.
2. Agrawal R, Sharma S, Bekir J, et al. Prevalence of polycystic ovaries and polycystic ovary syndrome in lesbian women compared with heterosexual women. Fertility and Sterility. 2004;82(5):1352-1357.
3. Institute of Medicine (US) Committee on Lesbian, Gay, Bisexual, and Transgender Health Issues and Research Gaps and Opportunities. The Health of Lesbian, Gay, Bisexual, and Transgender People: Building a Foundation for Better Understanding. Washington (DC): National Academies Press; 2011.
4. Rotterdam ESHRE/ASRM-Sponsored PCOS Consensus Workshop Group. Revised 2003 consensus on diagnostic criteria and long-term health risks related to polycystic ovary syndrome (PCOS). Human Reproduction. 2004;19(1):41-47.

This article is for general information only and does not replace advice from your GP or a qualified healthcare professional. Food supplements should not be used as a substitute for a varied and balanced diet. If you're pregnant, breastfeeding, taking medication or managing a diagnosed health condition, check with a healthcare professional before starting a new supplement.

References