PCOS, Hormones and Your Diet: What the Latest Research Recommends

Polycystic ovary syndrome remains one of the most commonly encountered and most nutritionally responsive conditions in nutrition counseling, and the evidence base for dietary management has grown meaningfully in recent years. Updated international guidelines from the International Evidence-Based Guideline for PCOS continue to support low-glycemic, Mediterranean-style dietary patterns as first-line dietary interventions, while newer research is providing greater nuance about the role of specific nutrients in PCOS management.

Inositol — specifically the combination of myo-inositol and D-chiro-inositol in a 40:1 ratio — has emerged as one of the most compelling nutritional supplements for PCOS, with multiple randomized controlled trials demonstrating improvements in insulin sensitivity, ovulatory function and androgen levels comparable to metformin with fewer side effects. Magnesium deficiency, which is common in women with PCOS, is associated with worsened insulin resistance and should be assessed and addressed through dietary sources (leafy greens, pumpkin seeds, legumes) and supplementation when indicated.

Gut microbiome composition appears to play a meaningful role in PCOS pathophysiology: research published in 2023 and 2024 found significant differences in microbiome diversity between women with and without PCOS, and preliminary evidence suggests that probiotic and prebiotic interventions may improve hormonal and metabolic parameters. At NutriGreene, we work with PCOS clients to build comprehensive dietary approaches that address insulin resistance, inflammation and hormonal balance together — because in PCOS, these systems cannot be treated in isolation.

Sources

• Teede HJ, et al. Recommendations from the international evidence-based guideline for the assessment and management of polycystic ovary syndrome. Hum Reprod. 2018;33(9):1602-1618.

• Unfer V, et al. Myo-inositol effects in women with PCOS: a meta-analysis of randomized controlled trials. Endocr Connect. 2017;6(8):647-658.

Ready to take the next step in your nutrition journey? Schedule an appointment at NutriGreene today. www.nutrigreene.com | (203) 429-4211 | info@nutrigreene.com