Protein, fibre and vegetables at every meal help steady insulin. Image posed by a model.
Why PCOS Matters for Fertility
PCOS can have a significant impact on fertility for both partners. The positive news: it is also one of the most treatable causes of infertility, so understanding it represents a crucial first step. PCOS affects about 8-13% of women, with up to 70% undiagnosed. Anna, 32, thought her irregular periods and acne were normal until years of trying to conceive led to answers. PCOS quietly disrupts cycles and metabolism. Your reproductive system relies on hormonal balance. PCOS disrupts this, affecting ovulation and triggering effects across the system:
For Women:
- Irregular or absent ovulation: In PCOS, eggs often fail to mature or be released, making conception harder. About 70-80% of women with PCOS experience infertility.
- Insulin resistance: 40-80% of women with PCOS have this (cells don’t respond to insulin). It worsens blood sugar control and egg quality, reducing chances of fertilisation and implantation.
- High testosterone and other androgens disrupt egg development, causing multiple small cysts on the ovaries. Hormonal imbalance keeps follicles from maturing.
- Women with PCOS may take longer to become pregnant, have fewer children, and start families later. Approximately 23% remain childless, compared to 18% of those without PCOS.
For Men:
While PCOS is a condition affecting women, the health of a male partner can directly influence a couple's chances of successful conception, as sperm quality and lifestyle factors are important for fertility outcomes.
- Male partners of women with PCOS are more likely to have less healthy diets, which can lower sperm quality and negatively affect conception. About 51.3% have abnormal semen parameters, compared to 44.7% in controls.
- High sperm DNA fragmentation can lower blastocyst formation in IVF for PCOS couples, though fertilisation remains similar.
- For male partners, factors like high BMI and smoking can significantly increase the risk of sperm abnormalities. Improving these lifestyle choices can enhance both partners' fertility outcomes.
- Sperm matures in about 90 days, so lifestyle changes show results within three months.
The Vicious Cycle
The vicious cycle of PCOS can be broken and reversed. Understanding each step allows you to take targeted action for better fertility. Here’s what happens when PCOS takes hold:
- Excess insulin triggers androgen production → Testosterone and other male hormones increase.
- Elevated androgens disrupt follicle maturation → Eggs don’t develop or release properly.
- Irregular or absent periods occur → Ovulation becomes unpredictable or stops entirely.
- Stress and frustration intensify → Emotional strain can worsen hormonal imbalances.
- The cycle perpetuates itself.
Breaking the PCOS cycle is essential for conception. Targeted interventions help you regain control.
Quick Wins - 5 Changes You Can Make This Week
Start with these quick, evidence-based changes: PCOS and insulin resistance are closely linked. Blood sugar spikes increase insulin, raising testosterone and disrupting ovulation.
1. Balance Your Blood Sugar at Every Meal
Pair carbs with protein or healthy fats to reduce insulin spikes. For example, try oatmeal with almond butter and berries.
2. Walk for 10 Minutes After Meals
A 10-minute walk after meals lowers blood sugar and supports ovulation.
Set a 10-minute timer after meals for a walk.
This can lower glucose levels by 20-30% and boost insulin sensitivity.
3. Prioritise 7-9 Hours of Sleep in a Cool, Dark Room
Poor sleep increases insulin resistance and cortisol levels, which suppresses ovulation. Quality sleep is essential for hormone regulation and reducing cravings. If you struggle with sleep and fertility, you’re not alone. Even small sleep improvements matter. Try a one-week sleep experiment: each morning, rate your energy level on a scale of 1 to 10. Notice how sleep habits affect your energy and mood. Tracking this one metric helps you see the benefits and stay motivated.
Set a bedtime, cool your room to 16-19°C (60-67°F), keep it dark, and skip screens 30 minutes before bed. Even one week helps restore balance.
4. Include Omega-3 Rich Foods Daily
Chronic inflammation worsens insulin resistance. Omega-3s help lower androgens and improve insulin sensitivity.
Eat fatty fish 3 times a week, or take fish oil. Flaxseed and walnuts are good plant-based options.
5. Consider Inositol Supplementation
Inositol (myo- and D-chiro-) improves insulin use, restores ovulation, boosts egg quality, and lowers androgens for many women with PCOS. Possible side effects include mild nausea or dizziness. Avoid with severe kidney issues or interacting medications unless approved by your doctor.
Consult your doctor about taking 2-4g of myo-inositol daily with folic acid. Many see progress within 2-3 months. Always check with a healthcare provider first.
The Male Factor
While about 40-50% of infertility cases involve male factors, discussions about partner health often decrease after a PCOS diagnosis, even though supporting the fertility journey requires the active involvement and lifestyle changes of both partners.
For partners providing sperm:
Male partners of women with PCOS often consume more processed foods, which can negatively impact sperm quality. Sperm quality depends on metabolic health, so both partners should be mindful of their dietary choices to enhance fertility. Sperm mature in about 90 days, so making improvements now can yield results within three months.
High sperm DNA fragmentation can reduce blastocyst quality, especially for PCOS couples using assisted reproductive technology. Both partners should focus on blood sugar, exercise, sleep, and stress, as these aspects can impact fertility.
Teamwork in making lifestyle changes, such as planning balanced meals, walking together, or improving sleep routines, helps support successful conception. Checking in on each other's progress can keep motivation high and ensure both partners are engaged in the fertility journey.
When to Seek Professional Help
Some cases need medical help, such as periods more than 45 days apart or none for 3+ months.
- Review the list below as a self-check. If you recognise one or more, consider seeking professional guidance.
- Trying to conceive for 6 or more months under age 35 (or 3 or more months over age 35) with PCOS
- Blood sugar signs: Fasting blood glucose over 5.6 mmol/L or HbA1c over 5.7 per cent (signs of prediabetes).
- Androgen excess: severe acne, male-pattern hair loss, or excess facial or body hair.
- Recurrent pregnancy loss (two or more miscarriages)
These signs suggest you need medical evaluation, including hormone and metabolic blood tests, ovarian reserve checks, and a semen analysis.
The Bottom Line
PCOS isn’t just about irregular periods or difficulty conceiving—it’s a metabolic and hormonal condition that affects your entire reproductive system. By implementing even a few of the strategies above, you’re taking meaningful action to support your fertility naturally.
Remember: Small, consistent changes often work better than dramatic overhauls. Start with one or two quick wins this week, perhaps balancing your blood sugar at meals and adding a post-dinner walk and build from there. Your body is designed for conception. Sometimes it just needs the right conditions, which start with understanding and managing PCOS at its core: insulin resistance and metabolic imbalance.
This information is for educational purposes and does not replace personalised medical advice. Always consult with your healthcare provider before making changes to your health routine, especially if you’re currently undergoing fertility treatment.
References
- World Health Organization (2025). Polycystic ovary syndrome. WHO Fact Sheet. https://www.who.int/news-room/fact-sheets/detail/polycystic-ovary-syndrome
- U.S. Department of Health and Human Services, Office on Women’s Health. Polycystic ovary syndrome. https://womenshealth.gov/a-z-topics/polycystic-ovary-syndrome
- Barbieri, R.L. (2015). Treatment of infertility in women with polycystic ovary syndrome: approach to clinical practice. Clinics (Sao Paulo), 70(11), 765-769. https://pmc.ncbi.nlm.nih.gov/articles/PMC4642490/
- Diamanti-Kandarakis, E., & Dunaif, A. (2012). Insulin Resistance and the Polycystic Ovary Syndrome Revisited: An Update on Mechanisms and Implications. Endocrine Reviews, 33(6), 981-1030. https://pmc.ncbi.nlm.nih.gov/articles/PMC5393155/
- Fertility Answers (2025). Insulin Resistance and Its Impact on Fertility in PCOS. https://www.fertilityanswers.com/insulin-resistance-and-its-impact-on-fertility-in-pcos/
- Goodarzi, M.O., Carmina, E., & Azziz, R. (2015). PCOS: etiology, genetics and epidemiology. Endocrinology and Metabolism Clinics of North America, 44(1), 51-71.
- Forslund, M., Teede, H., Melin, J., et al. (2025). Fertility and age at childbirth in polycystic ovary syndrome: results from a longitudinal population-based cohort study. American Journal of Obstetrics and Gynecology, 232(5), 545.e1-10. https://www.sciencedirect.com/science/article/pii/S0002937824011359
- Schallmoser, A., Niedrist, T., Belloni, A., et al. (2025). The prevalence of abnormal semen parameters in male partners of women with anovulatory polycystic ovarian syndrome: a retrospective case-control study. Reproductive Biology and Endocrinology, 23, 35. https://pmc.ncbi.nlm.nih.gov/articles/PMC11890236/
- Wang, C., Xu, X., Zhang, L., et al. (2022). The Effect of Sperm DNA Fragmentation on In Vitro Fertilization Outcomes for Women With Polycystic Ovary Syndrome. Frontiers in Endocrinology, 13, 838854. https://pmc.ncbi.nlm.nih.gov/articles/PMC9196864/
This page is general information and does not replace personal medical advice. Dr Jean-Marc Sobczyk, GMC 6148690.