Polycystic ovary syndrome (PCOS) is one of the most prevalent endocrine disorders affecting women of reproductive age, with an estimated global prevalence of 8–13%. Despite its name, the condition is primarily a metabolic and hormonal disorder, and its clinical management extends well beyond reproductive health.
What Is PCOS?
PCOS is a heterogeneous endocrine disorder characterised by a combination of the following features (Rotterdam criteria — at least 2 of 3 required for diagnosis):
- Oligo- or anovulation — irregular or absent menstrual cycles
- Clinical or biochemical hyperandrogenism — elevated androgens (testosterone, DHEA-S) or clinical signs such as hirsutism, acne, or androgenic alopecia
- Polycystic ovarian morphology — as identified on ultrasound (≥20 follicles per ovary or ovarian volume >10mL)
Other conditions must be excluded prior to diagnosis, including congenital adrenal hyperplasia, hyperprolactinaemia, and thyroid dysfunction.
Pathophysiology
The aetiology of PCOS is multifactorial, involving complex interactions between genetic predisposition, insulin resistance, and neuroendocrine dysregulation:
- Insulin resistance (IR) — present in approximately 65–70% of women with PCOS regardless of BMI. Hyperinsulinaemia stimulates ovarian androgen production and suppresses sex hormone-binding globulin (SHBG), increasing free androgen availability.
- LH/FSH dysregulation — elevated LH pulse frequency stimulates thecal androgen synthesis while relatively suppressed FSH impairs follicular maturation and ovulation.
- Chronic low-grade inflammation — elevated inflammatory markers (CRP, IL-6, TNF-α) are consistently observed and contribute to both IR and ovarian dysfunction.
- Adrenal androgen excess — in a subset of women, adrenal DHEA-S is elevated, contributing to the hyperandrogenic phenotype.
- Gut microbiome dysbiosis — emerging evidence implicates altered gut flora in the pathogenesis of IR and systemic inflammation in PCOS.
Clinical Manifestations
PCOS presents across a broad clinical spectrum. Common manifestations include:
- Menstrual irregularity (oligomenorrhoea, amenorrhoea)
- Infertility and subfertility
- Hirsutism, acne, and androgenic alopecia
- Weight gain and difficulty with weight management
- Metabolic syndrome and increased cardiovascular risk
- Non-alcoholic fatty liver disease (NAFLD)
- Psychological comorbidities — depression, anxiety, and disordered eating are significantly more prevalent in women with PCOS
Evidence-Based Nutritional and Supplemental Support
Lifestyle modification — including dietary intervention and physical activity — remains the first-line treatment for PCOS, particularly in the context of insulin resistance. Targeted nutritional supplementation can provide meaningful adjunctive support. The following are stocked in our dispensary and selected for their clinical evidence base:
Inositol (Myo-Inositol / D-Chiro-Inositol) — Insulin Sensitisation
Inositol is an insulin second messenger. Myo-inositol (MI) and D-chiro-inositol (DCI) have demonstrated efficacy in improving insulin sensitivity, restoring ovulatory function, and reducing androgen levels in multiple RCTs. A 40:1 MI:DCI ratio is considered physiologically optimal.
👉 EVE Blood Sugar Babe 120gm Powder
N-Acetyl-L-Cysteine (NAC) — Antioxidant and Insulin Sensitiser
NAC is a glutathione precursor with antioxidant, anti-inflammatory, and insulin-sensitising properties. Clinical trials have demonstrated improvements in menstrual regularity, ovulation rates, and androgen profiles in women with PCOS. NAC has also shown comparable efficacy to metformin in some studies.
👉 Designs For Health N-Acetyl-L-Cysteine 120vc
👉 Doctor's Best NAC Detox Regulators 600mg 60caps
Omega-3 Fatty Acids — Anti-Inflammatory and Lipid Modulation
Long-chain omega-3 fatty acids (EPA and DHA) reduce systemic inflammation, improve lipid profiles, and have demonstrated modest improvements in insulin sensitivity and androgen levels in women with PCOS. They are particularly relevant given the elevated cardiovascular risk associated with the condition.
👉 BePure Three Fish Oil
👉 About Health Lester's Oil 60sg
Magnesium — Insulin Sensitivity and HPA Axis Support
Magnesium deficiency is common in insulin-resistant states and has been associated with worsening metabolic parameters in PCOS. Supplementation supports glucose metabolism, reduces cortisol dysregulation, and may improve sleep quality and mood — all relevant in the PCOS clinical picture.
👉 Designs For Health Magnesium Glycinate Complex 60caps
👉 Coyne Magnesium Citrate Liposomal 60vc
Clinical Considerations and Monitoring
PCOS management should be individualised and guided by a qualified healthcare practitioner. Recommended baseline investigations include fasting insulin and glucose (HOMA-IR), full androgen panel (testosterone, DHEA-S, SHBG), thyroid function, lipid profile, and pelvic ultrasound where indicated.
Long-term monitoring is important given the elevated risk of type 2 diabetes, cardiovascular disease, endometrial hyperplasia, and metabolic syndrome associated with PCOS. Psychological screening for depression and anxiety is also recommended as part of comprehensive care.
Supplementation protocols should be reviewed in the context of the individual's phenotype, comorbidities, and any concurrent pharmaceutical management (e.g. metformin, oral contraceptive pill).
For personalised supplement recommendations tailored to your clinical presentation, please contact our team or consult your healthcare provider.
Disclaimer: This article is intended for informational and educational purposes only and does not constitute medical advice. Always consult a qualified health professional before commencing any supplementation programme, particularly if you are pregnant, breastfeeding, or taking prescription medications.