Medically reviewed by Dr. Pamela Frank, BSc(Hons), ND, Oct 2026
Sleep apnea has a reputation as a condition that affects overweight men who snore. That reputation is a big part of why it gets missed so often in women, including women who have real, measurable obstructive sleep apnea.
Why Women Are Underdiagnosed With Sleep Apnea
A 2026 review on sleep apnea in women estimates that up to 75% of cases in women go unrecognized.1 Part of the reason is symptom presentation. Men with obstructive sleep apnea more typically report the “classic” picture: loud snoring and witnessed breathing pauses. Women more often report daytime fatigue, poor sleep quality, nightmares, insomnia-type symptoms, depression, anxiety, and sexual dysfunction, a symptom cluster that overlaps heavily with stress, mood disorders, and perimenopause itself, and is far more likely to get investigated as one of those instead.1
Screening questionnaires and referral patterns were largely built around the male symptom profile, which compounds the problem. The scale of the gap shows up in older but still-cited research: in a large community sample with no obvious barriers to healthcare access, an estimated 93% of women with moderate-to-severe sleep apnea had never been clinically diagnosed, compared to 82% of men with the same severity of disease.2 Both numbers are concerning, but the gap between them is the point: even accounting for men also being substantially underdiagnosed, women were missed more often still.
The Menopause Connection
This is one of the more well-established findings in this area. The landmark Wisconsin Sleep Cohort Study found that postmenopausal women had significantly higher odds of sleep-disordered breathing than premenopausal women, independent of age, weight, and other known risk factors, with odds ratios of 2.6 for mild sleep-disordered breathing and 3.5 for moderate-to-severe disease.3 The proposed mechanism involves hormonal changes affecting upper airway muscle tone and fat distribution around the neck and airway, along with progesterone’s role as a respiratory stimulant; progesterone levels fall sharply at menopause, removing a protective effect that may partly explain why the male-female prevalence gap narrows substantially after menopause.
PCOS and Sleep Apnea
The research here is genuinely mixed, and it’s worth being direct about that rather than overstating it. Early studies found women with PCOS had a markedly higher prevalence of obstructive sleep apnea than age- and BMI-matched controls, and in at least one study, PCOS remained independently associated with sleep apnea even after adjusting for BMI.4
Other research has found insulin resistance, rather than androgen levels or BMI alone, to be the stronger predictor of sleep apnea risk within the PCOS population.5 Still other, larger analyses have found BMI to be the dominant factor, with PCOS diagnosis and testosterone levels not adding independent predictive value once BMI is accounted for. The honest summary: PCOS does appear to raise sleep apnea risk, insulin resistance looks like a meaningful part of the mechanism, but exactly how much is PCOS itself versus the weight and metabolic factors that often travel with it isn’t fully settled.
The Thyroid Connection
Hypothyroidism is frequently mentioned as a sleep apnea risk factor, through proposed mechanisms including fluid retention affecting the upper airway, reduced muscle tone in airway dilator muscles, and blunted ventilatory drive. The evidence is real but inconsistent: some studies find a significant, independent association between hypothyroidism and sleep apnea, while others find that the relationship is largely explained by shared risk factors like obesity and don’t find consistent improvement in sleep apnea after thyroid hormone treatment alone.6
This is a case where “possible contributing factor, not a reliable fix on its own” is the fair characterization. If you have hypothyroidism or Hashimoto’s and persistent poor sleep despite treatment, sleep apnea is worth ruling out as a separate, concurrent issue rather than assuming thyroid treatment alone will resolve it.
Why This Matters
The overlap between sleep apnea symptoms and “normal” perimenopausal or stress-related fatigue is exactly what makes this easy to miss. Chronic fatigue, brain fog, low mood, and anxiety are things many women are told, or tell themselves, are just part of getting older or managing a busy life. Untreated sleep apnea carries real downstream risk, including links to cardiovascular disease, insulin resistance, and mood disorders, which is part of why ruling it out matters rather than assuming hormone-related fatigue explains everything.
Sleep Apnea Symptoms: What to Watch For
Snoring is still a useful flag, but it isn’t the only one or even the most common one in women. Worth raising with your practitioner: unrefreshing sleep despite adequate hours in bed, morning headaches, witnessed breathing pauses (your partner may notice them), treatment-resistant fatigue or low mood, and any of the above occurring alongside PCOS, hypothyroidism, or the menopause transition. A home or in-lab sleep study (polysomnography) is the only way to actually diagnose obstructive sleep apnea; none of the above symptoms confirms it on their own.
Where Naturopathic Care Fits
Diagnosing and treating sleep apnea itself (CPAP, oral appliances, or other medical interventions) sits with a sleep physician, and a proper referral from your MD for a sleep study is the right next step if your history suggests it. Where naturopathic care fits alongside that: addressing modifiable contributing factors like weight, alcohol use close to bedtime, insulin resistance, inflammation in the respiratory tract, and underlying hormone imbalances (thyroid, PCOS, perimenopausal changes) that may be compounding the picture. See thyroid testing and treatment → or PCOS testing and treatment → for more on how those specific pieces are addressed.
Frequently Asked Questions About Sleep Apnea
Why is sleep apnea missed so often in women?
Largely because women tend to report different symptoms than the “classic” snoring-and-witnessed-apnea picture, more often fatigue, insomnia, low mood, and anxiety, which get investigated as other conditions instead. Screening tools and referral patterns were also largely built around how the condition presents in men.
Does menopause actually increase sleep apnea risk?
Yes, this is one of the more consistently replicated findings in this area. Large cohort research found postmenopausal women had significantly higher odds of sleep-disordered breathing than premenopausal women, independent of weight and age.
Does having PCOS mean I have a higher risk of sleep apnea?
Likely somewhat higher, though the research on exactly why is mixed. Insulin resistance appears to be a meaningful part of the mechanism, but how much of the added risk is PCOS itself versus associated weight and metabolic factors isn’t fully resolved in the research.
Can treating my thyroid fix my sleep apnea?
Not reliably on its own. Hypothyroidism is a plausible contributing factor through a few proposed mechanisms, but the evidence for a consistent, independent causal link is mixed, and sleep apnea often needs to be diagnosed and addressed as its own issue even when thyroid function is also being treated.
Sleep Apnea References
- Bouloukaki, Izolde & Fabozzi, Antonio & Schwarz, Esther & Schiza, Sophia. (2026). Advances in the Diagnosis and Treatment of Obstructive Sleep Apnea in Women. Pulmonary Therapy. 12. 181-199. 10.1007/s41030-026-00350-5.
- Terry Young, Linda Evans, Laurel Finn, Mari Palta, Estimation of the Clinically Diagnosed Proportion of Sleep Apnea Syndrome in Middle-aged Men and Women, Sleep, Volume 20, Issue 9, September 1997, Pages 705–706, https://doi.org/10.1093/sleep/20.9.705
- Young T, Finn L, Austin D, Peterson A. Menopausal status and sleep-disordered breathing in the Wisconsin Sleep Cohort Study. Am J Respir Crit Care Med. 2003 May 1;167(9):1181-5. doi: 10.1164/rccm.200209-1055OC. Epub 2003 Feb 13. PMID: 12615621.
- Robert B. Fogel, Atul Malhotra, Giora Pillar, Stephen D. Pittman, Andrea Dunaif, David P. White, Increased Prevalence of Obstructive Sleep Apnea Syndrome in Obese Women with Polycystic Ovary Syndrome, The Journal of Clinical Endocrinology & Metabolism, Volume 86, Issue 3, 1 March 2001, Pages 1175–1180, https://doi.org/10.1210/jcem.86.3.7316
- Vgontzas AN, Legro RS, Bixler EO, Grayev A, Kales A, Chrousos GP. Polycystic ovary syndrome is associated with obstructive sleep apnea and daytime sleepiness: role of insulin resistance. J Clin Endocrinol Metab. 2001 Feb;86(2):517-20. doi: 10.1210/jcem.86.2.7185. PMID: 11158002.
- Kuczyński W, Gabryelska A, Mokros Ł, Białasiewicz P. Obstructive Sleep Apnea Syndrome and Hypothyroidism – Merely Concurrence or Causal Association? Advances in Respiratory Medicine. 2016; 84(5):302-306. https://doi.org/10.5603/PiAP.2016.0038
