Let's be honest. Nobody hands you a roadmap when you get to this point.

You've navigated the diagnosis. You've done the research. You've probably cried in a few GP waiting rooms. And now you're here — preparing for IVF — with PCOS still in the mix, still making everything slightly more complicated than it needs to be.

The good news? PCOS is not a barrier to a successful IVF cycle. The research on this is actually pretty clear. Women with PCOS often respond well to stimulation. But the preparation phase — the three to six months before you even start — matters more than most people realise. And it's where most women are left completely on their own.

This is what I wish someone had told me earlier: what you do before your first appointment has a real impact on your response to treatment, your egg quality, and your body's ability to handle the physical and emotional demands of the process.

So let's get into it.

Women with PCOS face a higher risk of ovarian hyperstimulation syndrome (OHSS) during IVF — but targeted preparation can meaningfully reduce that risk and improve outcomes.

PCOS and IVF are not a straightforward combination. That's not to alarm you. It's just the truth, and you deserve to understand it clearly.

Here's what's actually going on. PCOS is characterised by higher numbers of antral follicles — those small, immature follicles sitting in your ovaries at any given time. During IVF stimulation, your clinic is essentially asking those follicles to grow and mature simultaneously. When you have PCOS, there are often more of them. That increases the risk of ovarian hyperstimulation syndrome (OHSS), a condition where the ovaries become swollen and over-responsive.

On the flip side, higher follicle counts also mean clinics often retrieve more eggs from women with PCOS — which sounds like good news, and often is. But egg quantity and egg quality are not the same thing. Insulin resistance — one of the most common underlying features of PCOS — can directly impact the hormonal environment inside the follicle, and that influences the egg developing within it.

This is why preparation matters.

You are not powerless here. There is a meaningful window of time before IVF — roughly three to six months — when lifestyle, nutrition, and targeted supplementation can genuinely influence the environment your eggs are developing in.

Insulin resistance disrupts the hormonal environment around developing eggs, affecting egg quality and increasing risk of poor IVF response — particularly in women with PCOS.

This connection does not get enough airtime.

Insulin is not just a blood sugar hormone. Inside the ovary, insulin acts on the cells surrounding your developing follicles. When insulin levels are chronically elevated — as they often are in insulin-resistant PCOS — it drives excess androgen production, disrupts normal follicle development, and creates a less-than-ideal environment for egg maturation.

A 2024 systematic review and meta-analysis including over 6,000 PCOS women undergoing IVF or ICSI found that insulin resistance was associated with a lower number of mature (MII) oocytes, fewer total embryos, a reduced clinical pregnancy rate, and a higher miscarriage rate compared to PCOS women without insulin resistance [1]. Separately, a 2023 study found that insulin resistance significantly decreased ovarian sensitivity to stimulation — particularly in lean women with PCOS — and independently increased early miscarriage risk [2].

This is not about weight. It is about metabolic function.

The practical implication: addressing insulin resistance before your cycle begins is not optional. It is foundational.

What does that actually look like?

• Prioritise protein and fibre at every meal. This slows glucose absorption and reduces post-meal insulin spikes. Think eggs with vegetables at breakfast. Chicken and lentils at lunch. Not a granola bar and a coffee.
• Reduce ultra-processed foods, not all carbohydrates. The goal is blood sugar stability, not restriction. Wholegrains, legumes, and root vegetables are not the enemy.
• Resistance training over high-intensity cardio. Muscle tissue is your most efficient glucose disposal system. Even two or three sessions of weight training per week improves insulin sensitivity over time. Frantic HIIT workouts — especially when you're already stressed — can actually raise cortisol and worsen the picture.
• Sleep. A single night of poor sleep measurably increases insulin resistance the following day. With an IVF cycle ahead of you, protecting your sleep is not a nice-to-have.

Myo-inositol improves insulin signalling in the ovary, supporting egg quality and ovulatory function — making it one of the most researched nutrients for PCOS and IVF preparation.

This is the one I wish more women were told about at diagnosis.

Myo-inositol is a naturally occurring compound found in foods like citrus fruits, beans, and wholegrains. It plays a central role in insulin signalling, and women with PCOS often have impaired inositol metabolism, meaning they produce or utilise less of it than their bodies need.

The research here is worth understanding. A prospective randomised study published in the International Journal of Endocrinology found that women with PCOS taking 4000mg myo-inositol daily before IVF had better oocyte quality, higher fertilisation rates, more grade-I embryos, and required fewer FSH units during stimulation compared to the placebo group [3]. A 2021 literature review in Frontiers in Endocrinology concluded that myo-inositol is effective at normalising ovarian function and improving oocyte and embryo quality in PCOS — with the caveat that further large-scale RCTs are needed to confirm clinical pregnancy and live birth rate improvements [4].

It's important to note that not all reviews have shown the same magnitude of benefit: a 2020 systematic review in Cureus found trends toward improved embryo quality but acknowledged the evidence base is still developing [5]. The research on this is actually pretty clear on one thing: myo-inositol is safe, well-tolerated, and consistently associated with improvements in the metabolic and ovarian environment that matters for IVF.

The typical research dose is 4000mg daily — often split as 2000mg morning and 2000mg evening.

MyOva Preconception provides 2000mg of myo-inositol alongside 16 vitamins and minerals specifically formulated to support women with PCOS who are trying to conceive. It uses Folate in the form of 5-methyltetrahydrofolate (5-MTHF) — the bioavailable form — rather than synthetic folic acid, which matters particularly for women with the MTHFR gene variant. It also contains Zinc (for normal fertility and DNA synthesis), Vitamin B6 (for hormonal regulation), and Chromium (for blood sugar support).

It's not a magic fix. But it gives your body what it is often missing — particularly when your physiology is working against normal nutrient utilisation.

Start IVF preparation at least three months before your cycle begins — this is how long it takes for nutritional changes to meaningfully influence egg quality, as eggs take around 90 days to mature.

Three months is the number that matters here.

Egg development — from primordial follicle to mature oocyte — takes approximately 90 days. That means the egg retrieved during your IVF cycle was developing in the nutritional and hormonal environment of your body for the three months prior. What you do now reflects in what your clinic retrieves then.

This is a genuinely hopeful framing, not a scary one. It means you have a real, meaningful window to support your body's biology.

The three-month prep period should ideally include:

• Starting a preconception supplement that includes myo-inositol and Folate
• Stabilising blood sugar through nutrition and movement
• Addressing sleep and stress — both of which directly affect cortisol, and cortisol directly affects ovarian function
• Reducing alcohol, which interferes with hormone metabolism and liver function
• Getting a baseline blood panel if you haven't already — fasting insulin, HbA1c, Vitamin D, thyroid function, and AMH

If you have less than three months before your cycle starts, don't panic. Start now. Every week of preparation adds to the picture.

Women with PCOS are at higher risk of ovarian hyperstimulation syndrome during IVF, but this risk can be significantly reduced through protocol adjustments and metabolic preparation before the cycle.

Yes, OHSS is a real consideration. No, it should not stop you.

OHSS occurs when the ovaries are overstimulated and respond excessively — causing fluid shifts, swelling, and in severe cases, complications requiring medical attention. Women with PCOS have more follicles to begin with, which means the ovaries can be more reactive to stimulation drugs.

The good news is that IVF protocols have improved dramatically. Most clinics now use antagonist protocols and freeze-all strategies for women with PCOS, reducing OHSS risk significantly. Metformin — often already prescribed for insulin-resistant PCOS — has also been shown to reduce OHSS incidence when taken before and during stimulation.

Your part in this is the metabolic groundwork described above. Improving insulin sensitivity reduces androgen levels, which reduces follicular hyperresponsiveness. It is not a guarantee. But it is a lever you can pull.

Talk to your clinic about your PCOS status, your AMH, and your antral follicle count. A good clinic will tailor your protocol accordingly.

Chronic psychological stress is associated with longer time-to-pregnancy and reduced fecundity, with salivary alpha-amylase — a key stress biomarker — linked to a more than twofold increased risk of infertility in prospective research.

Let's not wrap this in a bow and call it "self-care". The cortisol-fertility link is physiological, not motivational.

Cortisol is your primary stress hormone. When it is chronically elevated — through sustained work pressure, emotional strain, or sleep deprivation — it suppresses the hypothalamic-pituitary-ovarian (HPO) axis. That means reduced LH pulsatility, disrupted ovulation signalling, and altered progesterone production in the luteal phase.

A prospective cohort study published in Human Reproduction — the LIFE Study — followed 501 couples trying to conceive and found that women in the highest tertile of salivary alpha-amylase (a stress biomarker) had a 29% reduction in fecundity and a more than twofold increased risk of infertility [6]. A separate prospective cohort study found that elevated salivary alpha-amylase before and during IVF was associated with increased risk of pregnancy failure [7].

The practical approach here is not "just relax" — which is, frankly, the least useful advice ever given to a woman preparing for IVF.

It is this: reduce the sources of stress you can control. Workload, screen time before bed, social commitments that drain rather than restore, over-exercising when you're already depleted. Support your nervous system: walking, strength training, therapy, breathwork, time in nature. These are not luxury additions. They are physiological interventions.

Sperm quality — including motility, morphology, and DNA fragmentation — directly affects fertilisation and embryo development during IVF, making male preparation equally important.

Yes. And this is underserved territory.

Around 40–50% of fertility challenges involve male factors. During IVF, sperm quality affects fertilisation rates and embryo development — not just whether a sperm reaches an egg, but the quality of the embryo that results. A 2023 systematic review found that sperm DNA fragmentation (SDF) was associated with reduced fertilisation rates, impaired embryo quality, and in ICSI cycles, reduced blastocyst formation [8]. High SDF has also been associated with increased pregnancy loss post-implantation [9].

Sperm take approximately 74 days to develop. That means the same three-month prep window applies to your partner.

Key considerations for male fertility prep: antioxidant support to reduce oxidative stress, CoQ10 for mitochondrial energy, zinc, selenium, and — increasingly recognised in the research — myo-inositol, which plays a role in sperm function and motility.

If you're preparing as a couple, MyOva's His & Hers Fertility Bundle combines the Preconception formula with a male fertility supplement. Both include N-acetyl cysteine (NAC), a powerful antioxidant that supports cellular health and reduces oxidative stress in reproductive tissue.

This is not about pressure. It is about both of you showing up for the process with the strongest possible biological foundations.

A Mediterranean-style diet rich in antioxidants, healthy fats, and plant proteins has the most consistent evidence base for improving IVF outcomes across multiple studies.

You do not need a ten-page meal plan. You need a principle.

The dietary pattern with the most consistent evidence for fertility — including IVF outcomes — is a Mediterranean-style approach. A 2025 systematic review of eight studies found that four reported statistically significant associations between higher Mediterranean diet adherence and positive ART outcomes, including increased embryo numbers and higher clinical pregnancy and live birth rates [10]. A meta-analysis pooling data from higher-quality studies found that greater adherence to the Mediterranean diet was associated with improved live birth and pregnancy rates in ART (OR 1.91; 95% CI 1.14–3.19) [11]. The evidence is not unanimous, and further rigorous research is needed — but it represents the strongest dietary signal we currently have for IVF preparation.

What does this look like practically?

• Colourful vegetables at every meal. Antioxidants protect developing eggs from oxidative stress. The more variety, the better. Think dark leafy greens, tomatoes, peppers, and berries.
• Oily fish two or three times per week. Omega-3 fatty acids support egg cell membrane quality and reduce inflammatory load. Sardines, mackerel, salmon.
• Legumes and wholegrains over refined carbohydrates. Lentils, chickpeas, quinoa, oats. Steady glucose. Steady insulin.
• Olive oil as your primary fat. Anti-inflammatory and simple.
• Adequate protein. Eggs, fish, poultry, legumes. Aim for protein at every meal. Protein stabilises blood sugar and supports the synthesis of hormones and neurotransmitters.

What to reduce: alcohol (consistently associated with worse IVF outcomes), ultra-processed foods, excessive caffeine (more than 200mg daily), and trans fats.

This is not a punishment diet. It is a foundation.

Your body is trying to tell you something. The fact that you're here — reading this, preparing intentionally — means you are already doing something right.

IVF is not a guaranteed outcome. Nothing in fertility is. But the preparation phase is yours. It's the one part of the process where you have real agency — over your nutrition, your metabolic health, your sleep, your nervous system, your supplementation choices.

You are not powerless here.

Your diagnosis is a starting point, not a verdict.

Ready to start building your foundation? MyOva Preconception was formulated specifically for women with PCOS who are trying to conceive — with 2000mg myo-inositol, 16 vitamins and minerals, bioavailable Folate (5-MTHF), Zinc, and Chromium. We recommend taking it consistently for at least 90 days before your cycle begins.

How long before IVF should I start taking myo-inositol? At least three months before your IVF cycle begins. Egg development takes approximately 90 days, so starting early gives the supplement time to influence the environment in which your eggs are maturing.

Can I take MyOva Preconception alongside medication from my IVF clinic? Always check with your clinic or GP before taking any supplement alongside prescribed medication. MyOva Preconception uses food-state nutrients that naturally occur in the body, but your clinic should be aware of everything you're taking during your cycle.

Does myo-inositol help with OHSS risk? Myo-inositol improves insulin sensitivity, which reduces androgen excess, which may in turn reduce follicular hyperresponsiveness — a key factor in OHSS risk. However, your clinic's protocol choices are the primary lever for OHSS management. Speak with your specialist directly.

Is folic acid or folate better before IVF? Folate — specifically 5-methyltetrahydrofolate (5-MTHF) — is the bioavailable form found naturally in food and used in MyOva Preconception. It is better absorbed than synthetic folic acid, particularly for women with the MTHFR gene variant, which affects folate metabolism.

Can my partner take myo-inositol before IVF too? Yes. Myo-inositol has emerging evidence for male fertility, supporting sperm function and reducing oxidative stress. MyOva's His & Hers Bundle includes targeted male fertility support alongside the Preconception formula.

Always consult your GP or fertility specialist before starting any new supplement, especially if you are on prescribed medication or under medical supervision. MyOva supplements are natural food supplements and are not intended to diagnose, treat, or cure any medical condition.

1. Li Y, Qi X, et al. Impact of insulin resistance on IVF/ICSI outcomes in women with polycystic ovary syndrome: a systematic review and meta-analysis. European Journal of Obstetrics & Gynecology and Reproductive Biology. 2024. https://doi.org/10.1016/j.ejogrb.2024.05.016

2. Wu Y, et al. Impact of Insulin Resistance on Ovarian Sensitivity and Pregnancy Outcomes in Patients with Polycystic Ovary Syndrome Undergoing IVF. Frontiers in Endocrinology. 2023. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9918062/

3. Lesoine B, Regidor PA. Prospective Randomized Study on the Influence of Myoinositol in PCOS Women Undergoing IVF in the Improvement of Oocyte Quality, Fertilization Rate, and Embryo Quality. International Journal of Endocrinology. 2016;2016:4378507. https://doi.org/10.1155/2016/4378507

4. Ciotta L, et al. Impact of myo-inositol treatment in women with polycystic ovary syndrome in assisted reproductive technologies. Frontiers in Endocrinology. 2021. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7816413/

5. Garg D, Tal R. Myo-Inositol's Role in Assisted Reproductive Technology: Evidence for Improving the Quality of Oocytes and Embryos in Patients With Polycystic Ovary Syndrome. Cureus. 2020;12(6):e8418. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7292722/

6. Lynch CD, et al. Preconception stress increases the risk of infertility: results from a couple-based prospective cohort study — the LIFE study. Human Reproduction. 2014;29(5):1067–1075. https://doi.org/10.1093/humrep/deu032

7. Peng T, et al. Stress increases the risk of pregnancy failure in couples undergoing IVF. Stress. 2019;22(4):414–419. https://doi.org/10.1080/10253890.2019.1584181

8. Ribeiro SCB, et al. Impact of sperm DNA fragmentation on the clinical outcome of assisted reproduction techniques: a systematic review of the last five years. JBRA Assisted Reproduction. 2023. https://pmc.ncbi.nlm.nih.gov/articles/PMC10279435/

9. Borini A, et al. Sperm DNA fragmentation: paternal effect on early post-implantation embryo development in ART. Human Reproduction. 2006;21(11):2876–2881. https://doi.org/10.1093/humrep/del251

10. Martínez-Álvarez L, et al. Associations between adherence to a Mediterranean diet and assisted reproductive techniques outcomes: a systematic review. European Journal of Public Health. 2025. https://doi.org/10.1093/eurpub/ckaf100

11. Kazemi A, et al. Can Dietary Patterns Impact Fertility Outcomes? A Systematic Review and Meta-Analysis. Nutrients. 2023;15(13):2947. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10255613/