You were handed a PCOS diagnosis. Maybe a doctor mentioned it could affect your fertility, then moved swiftly on to talk about the pill. Or maybe you've been quietly Googling at midnight, wondering what it actually means for your chances of getting pregnant one day.

Here's what I wish someone had told me: PCOS does not make getting pregnant impossible. But it does mean your body needs a different kind of support — and understanding why is where it all starts.

This article is going to walk you through what PCOS actually does to egg quality, what the research supports in terms of nutrients and lifestyle, and where the MyOva Preconception supplement fits into all of it.

No fluff. No miracle claims. Just honest, evidence-led information — because that's what you deserve.

PCOS disrupts ovulation and egg development primarily through insulin resistance and androgen excess, both of which interfere with follicle maturation.

This is important, because egg quality isn't a single fixed trait — it's the result of a process. Your eggs spend months developing before they're released. Everything that happens during that development window — hormonal signalling, oxidative stress levels, mitochondrial function — shapes how viable those eggs are.

In women with PCOS, a few things tend to go wrong in that process:

Insulin resistance. Many women with PCOS have cells that don't respond efficiently to insulin. This drives up insulin levels, which in turn elevates androgens (male hormones like testosterone). High androgens disrupt the normal growth and maturation of follicles — meaning eggs may not develop properly, or ovulation may not happen at all.

Oxidative stress. Research consistently shows that women with PCOS tend to have higher levels of oxidative stress — essentially, an imbalance between free radicals and antioxidants in the body. Eggs are particularly vulnerable to oxidative damage. When oxidative stress is high during follicle development, it can affect egg quality, embryo development, and ultimately implantation.

Mitochondrial function. Mitochondria are the energy factories inside your cells, and eggs need enormous amounts of energy to mature and fertilise properly. PCOS has been associated with impaired mitochondrial function, which is thought to contribute to poorer egg development.

You're not imagining it. The biology is real. But it's also responsive — which is the part most people don't hear about.

Yes. While genetics set the baseline, egg quality is influenced by your metabolic environment during the months before ovulation.

Eggs take approximately 90 days to develop — which is why the "three month rule" matters so much when you're preparing for conception. What you do (and don't do) in those three months creates the environment in which your eggs are maturing.

This is both the sobering and the hopeful truth: you have more influence over egg quality than most people realise, particularly when you understand the specific mechanisms driving your PCOS.

This is what I want you to hold onto: your diagnosis is a starting point, not a verdict.

The nutrients with the strongest evidence for PCOS-related egg quality include myo-inositol, CoQ10 (ubiquinol), folate (as 5-MTHF), NAC, and alpha-lipoic acid.

Let's go through each one properly.

Myo-inositol is a naturally occurring compound that plays a critical role in insulin signalling. Women with PCOS often have lower levels of it in their bodies — and the research is actually quite clear on what happens when you supplement it.

Multiple clinical trials have shown that myo-inositol supplementation in women with PCOS improves insulin sensitivity, supports more regular ovulation, and is associated with better egg quality and embryo development in IVF settings. A landmark Italian study published in Gynecological Endocrinology found that myo-inositol significantly improved oocyte and embryo quality in women with PCOS.

It works by improving how cells respond to insulin — which, as we covered above, is one of the primary drivers of egg quality disruption in PCOS.

The MyOva Preconception supplement provides 2000mg of myo-inositol per daily dose, which aligns with the dosing used in most clinical studies. For those wanting a higher daily intake, it can be combined with Myoplus to reach 4000mg per day.

This is what I wish someone had told me when I was first diagnosed. Not "here's the pill." But here's what's actually happening in your body, and here's what the research supports.

CoQ10 — particularly in its active form, ubiquinol — is one of the most discussed nutrients in the fertility space, and for good reason.

Coenzyme Q10 is essential for mitochondrial energy production. Because egg maturation requires enormous amounts of cellular energy, supporting mitochondrial function matters. As we age (or when oxidative stress is high, as it tends to be in PCOS), CoQ10 levels in the body naturally decline.

Research published in the Journal of Ovarian Research and several fertility-focused studies suggest that CoQ10 supplementation may support egg quality and embryo development, particularly in women with diminished ovarian reserve or those undergoing IVF.

The Preconception formula contains CoQ10 in the ubiquinol form — which is more bioavailable than the standard ubiquinone form found in cheaper supplements.

You've heard about folic acid. But here's what most people don't know: folic acid is a synthetic form of vitamin B9, and a significant proportion of the population has a genetic variation (MTHFR) that makes it harder for the body to convert folic acid into the active form it actually uses.

Folate in the form of 5-methyltetrahydrofolate (5-MTHF) bypasses that conversion entirely. It's the form your body can use immediately — and it's what the Preconception supplement contains, at the Department of Health recommended dose of 400mcg.

Folate supports healthy cell division and DNA synthesis — both of which are critical during egg development and in the earliest days of pregnancy.

This is the kind of detail that matters, and that most prenatal supplements gloss over.

NAC is a precursor to glutathione — one of the body's most powerful antioxidants. Given that oxidative stress is a significant driver of egg quality issues in PCOS, supporting the body's antioxidant defences makes mechanistic sense.

Research on NAC in PCOS is growing. Studies have shown it may support ovulation, improve insulin sensitivity, and reduce markers of oxidative stress. It's also been studied alongside clomiphene (a fertility medication) and shown to improve outcomes in women with PCOS.

The Preconception formula includes NAC as part of its antioxidant stack.

Another antioxidant that's particularly interesting for PCOS because of its dual role: it supports both insulin sensitivity and antioxidant defence.

ALA has been studied in the context of PCOS and shows promise for reducing oxidative stress markers and improving metabolic parameters — both of which feed back into egg quality.

Again, this is included in the Preconception formula. Not because it's a magic bullet. But because it gives your body what it's often missing.

Zinc is essential for normal ovarian function, DNA synthesis, and fertilisation. Zinc deficiency has been linked to impaired ovulation and poor egg quality. The Preconception formula includes zinc bisglycinate — a highly bioavailable form — to support reproductive health.

Vitamin B6 contributes to the regulation of hormonal activity. For women with PCOS navigating hormone imbalance, this is a foundational nutrient. It's also important for progesterone metabolism in the luteal phase — which matters for implantation if you're actively trying to conceive.

Yes — specifically blood sugar stability, protein intake, sleep, and the type of exercise you're doing.

Here's what's worth knowing:

Blood sugar. Because insulin resistance is central to PCOS, managing blood sugar has a direct downstream effect on hormone levels and ovarian function. This doesn't mean low-carb obsession. It means stabilising glucose through protein with every meal, reducing refined carbohydrates, and prioritising fibre. Simple, sustainable, effective.

Protein. Adequate protein intake supports ovulation. Research from the Harvard Nurses' Health Study found that plant-based protein sources were associated with improved ovulatory function. Aim for protein at every meal — particularly breakfast, which sets your blood sugar trajectory for the day.

Exercise. Here's the nuance: high-intensity exercise can be counterproductive when cortisol is already elevated (common in PCOS). Strength training and walking are your allies here. They improve insulin sensitivity without putting the body into a stress response. HIIT three times a week when you're exhausted? Less helpful than it sounds.

Sleep. Insulin sensitivity worsens with poor sleep. If you're prioritising everything except sleep, you're making the uphill battle steeper. Seven to nine hours is not a luxury for women with PCOS — it's a metabolic imperative.

Most evidence suggests a minimum of 90 days of consistent supplementation to meaningfully influence egg development — because that's how long the egg maturation cycle takes.

This is the hardest pill to swallow (no pun intended) in a world of overnight results. Eggs maturing right now were beginning their development three months ago. What you do today is working on the eggs that will be released in three months.

This is why the MyOva recommendation is consistent use for at least 90 days. Not because supplements take time to "kick in" in a vague wellness sense — but because the biology has a timeline.

If you're planning ahead before trying to conceive, that three-month window is your preparation runway. Use it.

This is a question worth addressing directly, because you'll see it mentioned on TikTok and in Facebook groups.

An Italian study found that women who took D-chiro inositol had fewer eggs and lower quality embryos compared to those who took a placebo. Because so many MyOva customers are trying to conceive, or plan to in the future, D-chiro inositol is deliberately excluded from the formula.

Myo-inositol — which has a stronger and more consistent evidence base for fertility — is the focus instead.

The research on this is actually pretty clear, once you know what to look for.

Can PCOS affect egg quality? Yes. PCOS can interfere with egg quality through insulin resistance, elevated androgens, and increased oxidative stress — all of which affect how follicles develop and mature. However, these are modifiable factors, and targeted nutritional support may help.

Does myo-inositol improve egg quality in PCOS? Multiple clinical studies suggest that myo-inositol supplementation improves ovulation regularity and is associated with better oocyte and embryo quality in women with PCOS, particularly at doses of 2000–4000mg daily.

How long should I take preconception supplements before trying to conceive? At least 90 days is recommended, because that's approximately how long it takes for follicles to complete their development cycle. Starting three months before you plan to begin trying gives the nutrients time to support the eggs currently maturing.

Is folate different from folic acid? Yes. Folic acid is a synthetic form of vitamin B9 that requires conversion in the body before use. Folate — particularly as 5-methyltetrahydrofolate (5-MTHF) — is the active form that the body can use directly, making it more efficient for many women, including those with MTHFR gene variants.

Can I take the MyOva Preconception supplement alongside other medication? Always speak to your GP before starting any supplement alongside existing medication. The MyOva team also recommends consulting your GP before beginning any new supplement regimen.

PCOS makes things more complicated. It doesn't make them impossible.

Your eggs are developing right now in an environment shaped by your insulin sensitivity, your oxidative stress levels, your nutrient status, and your sleep. That environment is not fixed. It's responsive.

The evidence for targeted nutritional support — myo-inositol, CoQ10, 5-MTHF folate, NAC, alpha-lipoic acid, zinc, B6 — is real, and it's the science that sits behind the MyOva Preconception formula.

It's not a magic fix. But it gives your body what it's often missing — in doses that match what the research actually used, in forms your body can absorb efficiently.

Your body is trying to tell you something. Now you know how to listen.