How to Improve Egg Quality Before IVF: Diet, Supplements, and Lifestyle Tips

Written by the Fertility Team at Mannat Fertility | Medically reviewed by Dr. Avula L. Nethra— Mannat Fertility, Bangalore 

Quick takeaways

• Egg quality refers to an egg’s chromosomal normality and the health of its mitochondria, not just how many eggs you have — and it’s a major driver of IVF success.
• Because an egg takes roughly three months to mature inside its follicle, most diet, supplement, and lifestyle changes need that same three-month runway before an IVF cycle to have a realistic chance of helping.
• A Mediterranean-style diet, targeted antioxidant supplements such as CoQ10, and removing smoking, excess alcohol, and chronic stress are the interventions with the most consistent evidence behind them — though none of these can reverse the chromosomal effects of age on eggs.
• This article is for general education and isn’t a substitute for personalised advice from a fertility specialist, especially before starting any supplement.

If you’re preparing for IVF, you’ve probably already heard that “egg quality” matters more than egg count. It’s good advice, but it’s also vague — what exactly are you supposed to do about it, and does any of it actually work? This article walks through what the evidence currently says about diet, supplements, and lifestyle changes before IVF, and where the limits of that evidence are.

What “Egg Quality” Actually Means

An egg’s quality comes down to two things: whether it carries the correct number of chromosomes, and whether its mitochondria — the structures that supply the energy for fertilisation and early embryo development — are functioning well. Eggs with chromosomal errors are far less likely to fertilise normally, implant, or result in a healthy pregnancy, and the rate of these errors rises sharply with a woman’s age because eggs are present in the ovaries from birth and age along with the rest of the body.

This is different from ovarian reserve, which refers to how many eggs remain. A woman can have a normal egg count but lower-quality eggs, or a reduced count with eggs that are still chromosomally healthy. Your fertility team typically evaluates both through a female fertility assessment, which may include ovarian reserve testing and ultrasound-based follicular studies to track how follicles are developing in a given cycle.

Why Timing Matters: The Three-Month Window

Eggs don’t mature overnight. The follicle that eventually releases (or is retrieved during IVF) has typically been developing for around three months before that cycle, moving through several stages of growth before it becomes responsive to the hormones used in ovarian stimulation. This is why most fertility specialists recommend starting dietary changes, supplements, and lifestyle adjustments at least 90 days before an IVF cycle begins — it’s roughly the window during which the eggs you’ll be using are actively maturing and potentially most responsive to changes in their environment.

Diet: What the Evidence Supports

No single food transforms egg quality, but dietary patterns have a more consistent evidence base than individual “superfoods.” A prospective cohort study of nearly 600 women undergoing IVF found that those with higher adherence to a Mediterranean-style diet — rich in vegetables, fruit, whole grains, legumes, fish, and olive oil, with limited red and processed meat — produced a significantly higher number of usable embryos than women with lower adherence. A separate cohort study reported substantially higher live birth rates among women who followed the diet most closely, particularly those under 35, though not every study has found the same benefit, and results for egg number specifically have been mixed.

The likely mechanism is oxidative stress. Eggs and the fluid surrounding them are particularly vulnerable to damage from reactive oxygen species, and diets low in antioxidants appear to compound this. One review of IVF patients found that higher fruit and vegetable intake was independently associated with better fertilisation rates, while smoking and heavier alcohol use worked against it.

In practical terms, this means building meals around colourful vegetables and fruit, oily fish or plant-based omega-3 sources, whole grains over refined carbohydrates, and healthy fats like olive oil and nuts, while limiting trans fats, excess sugar, and heavily processed foods. For a deeper, India-specific breakdown of what this looks like on a plate, see our guide to a fertility-friendly diet and our piece on vitamins to prioritise for fertility.

Supplements: What’s Backed by Research, and What Isn’t

Supplements are where patients tend to get the most conflicting advice, so it’s worth being precise about what current research actually shows — and where it falls short.

Coenzyme Q10 (CoQ10). This is the best-studied egg quality supplement. CoQ10 is involved in mitochondrial energy production within the egg, and levels naturally decline with age. A 2024 systematic review and meta-analysis of randomised controlled trials in women with diminished ovarian reserve found that CoQ10 pretreatment before IVF was associated with more eggs retrieved and improved fertilisation rates. Earlier trials reported fewer chromosomal abnormalities and lower rates of cycle cancellation due to poor response among women who supplemented with CoQ10 for one to two months before stimulation began. The evidence is strongest in women over 35 or with diminished ovarian reserve; benefit in younger women with normal reserve is less established.

DHEA (dehydroepiandrosterone). DHEA is sometimes used in women with diminished ovarian reserve, with some studies reporting improved oocyte and embryo yields after about 12 weeks of supplementation. However, the evidence is mixed — a meta-analysis found that while DHEA improved markers like AMH and antral follicle count in some studies, it did not consistently improve live birth rates, and results vary widely by patient population and dose. Because DHEA is a hormone precursor that can affect androgen levels, it should only be used under a fertility specialist’s supervision, not self-prescribed. If you’re being evaluated for diminished ovarian reserve, ask your doctor whether interventions like ovarian rejuvenation therapy are more appropriate for your specific case.

Other commonly recommended options include vitamin D (low levels have been associated with poorer IVF outcomes in observational studies, though supplementation trials are still limited), omega-3 fatty acids, myo-inositol (particularly relevant for women with PCOS), and a standard prenatal multivitamin with folic acid. The honest summary across most of these is that the evidence ranges from promising to inconclusive, and “more is better” doesn’t apply — high-dose, unsupervised supplementation isn’t risk-free and hasn’t been shown to outperform moderate, evidence-based dosing.

The most important point: discuss any supplement plan with your fertility specialist before starting, since the right combination and dose depends on your age, ovarian reserve, and any underlying conditions.

Lifestyle Factors That Influence Egg Quality

Smoking. This has the most consistent negative evidence of any lifestyle factor. Smoking is associated with faster depletion of ovarian reserve, lower IVF success rates, and earlier menopause, and the effect appears dose-dependent. If you smoke and are preparing for IVF, quitting is one of the highest-impact changes available — see our detailed look at how smoking harms fertility.

Alcohol and caffeine. Heavy alcohol use is linked to poorer fertilisation rates, while moderate intake hasn’t shown the same clear association in every study; most specialists recommend minimising both during an IVF preparation window out of caution.

Body weight. Both very low and very high BMI are associated with reduced IVF success, partly through hormonal pathways that affect egg maturation. Modest, gradual weight changes toward a healthier range — rather than rapid crash dieting, which can itself disrupt ovulation — tend to be the more sustainable approach. We cover this in more depth in does being overweight affect your fertility.

Sleep and stress. Chronic sleep disruption and high stress affect the hormonal signalling that governs follicle development. While stress alone doesn’t appear to cause infertility, managing it during fertility treatment is associated with better treatment adherence and quality of life, and may support more consistent hormonal rhythms. Our guide on reducing stress during infertility treatment has practical strategies.

Environmental exposures. Limiting exposure to cigarette smoke (including secondhand smoke), excess heat near the reproductive organs, and certain endocrine-disrupting chemicals found in some plastics is a reasonable precaution, though the human evidence for specific everyday exposures is still developing.

What These Changes Can’t Do

It’s worth being direct about the limits here, because overpromising does patients a disservice. Diet, supplements, and lifestyle changes can support the environment eggs develop in — reducing oxidative stress and supporting mitochondrial function — but they cannot reverse the chromosomal aging that naturally occurs in eggs over time, nor can they generate new eggs. For women with significantly diminished ovarian reserve or advanced reproductive age, these measures are a meaningful complement to treatment, not a replacement for timely medical care. This is part of why specialists often recommend egg freezing in your 20s or early 30s for women who want to preserve options, since egg quality at the time of freezing matters more than any intervention done years later. You can find current egg freezing costs and process details here.

When to See a Fertility Specialist

Don’t wait to “perfect” your diet and supplements before getting evaluated — testing and lifestyle optimisation can happen in parallel, and starting earlier gives you more options. It’s worth booking an assessment promptly if you’re 35 or older and have been trying to conceive for six months (or 12 months under 35) without success, if you have irregular or absent periods, a known condition like PCOS or endometriosis, a prior diagnosis of diminished ovarian reserve, or if you’re already scheduled for an IVF cycle and want a personalised pre-treatment plan rather than generic advice.

A fertility specialist can review your ovarian reserve markers, tailor a supplement and diet plan to your specific profile, and advise on realistic timelines based on your IVF treatment plan. You can book a consultation with our team to get a personalised assessment before your cycle begins.

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This article is for general educational purposes and does not replace personalised medical advice. Always consult a qualified fertility specialist before starting any new supplement or making significant changes ahead of an IVF cycle, particularly if you have an existing health condition.