An honest, evidence-based guide — what egg quality really is, how age affects it, what supplements may help at the margins, and when donor eggs become the right path forward
MBBS, DGO, Diploma in ART – Germany | 19+ Years Experience | TGMC Reg: 50624
5,000+ IVF Cycles | Boduppal, Hyderabad
When fertility specialists talk about "egg quality," they are referring to the chromosomal competence of an egg — whether it contains the correct number of chromosomes. A chromosomally normal egg is called euploid (46 chromosomes). An egg with an abnormal number of chromosomes is called aneuploid.
When a euploid egg is fertilised by a normal sperm, the resulting embryo has the correct 46 chromosomes and has the best chance of implanting and developing into a healthy pregnancy. When an aneuploid egg is fertilised, the resulting embryo usually fails to implant, miscarries in early pregnancy, or — in a small number of cases — results in a chromosomal condition (such as Down syndrome).
There is no way to look at an egg under the microscope and determine its chromosomal status. Egg quality is inferred rather than directly observed. Indicators include:
Only euploid embryos can result in a healthy ongoing pregnancy. The proportion of a woman's eggs that are euploid decreases with age — this is the fundamental biological reason fertility declines with age and why IVF success rates fall in women over 35.
| Age | Approx. % Euploid Eggs |
|---|---|
| Under 35 | ~60–75% |
| 35–37 | ~50–60% |
| 38–40 | ~35–50% |
| 41–42 | ~25–35% |
| 43+ | <25% |
Estimates based on PGT-A data from multiple published studies. Individual variation exists.
Age is the dominant factor — but it is not the only one. Several modifiable factors also play a role.
Eggs age with the woman. The older a woman is, the higher the proportion of aneuploid (chromosomally abnormal) eggs she produces. Age-related decline in egg quality is inevitable and cannot be reversed. This is why fertility specialists always emphasise not delaying treatment unnecessarily.
AMH (anti-Müllerian hormone) reflects ovarian reserve — how many eggs remain. It does not measure chromosomal quality. A woman with low AMH may still have good-quality eggs (especially if young). A woman with normal AMH may have poor-quality eggs if she is older. AMH guides stimulation protocols, not quality predictions.
Smoking is the most harmful modifiable factor — it directly damages egg DNA and depletes the egg pool faster. Heavy alcohol consumption, obesity, and chronic stress all negatively affect egg quality. These should be addressed ideally 3–6 months before an IVF cycle.
Eggs are highly sensitive to oxidative damage — an imbalance between free radicals and the body's antioxidant defences. Poor diet, environmental toxins, smoking, and certain medical conditions increase oxidative stress in the follicular fluid surrounding developing eggs, impairing their development.
Endometriosis — particularly ovarian endometriomas (chocolate cysts) — can damage the ovarian tissue and reduce the number and quality of eggs. Surgery for endometriomas also carries a risk of damaging healthy ovarian tissue and should be carefully weighed before IVF.
Women with PCOS typically have many eggs (high AMH, high antral follicle count) but the quality of individual eggs is often variable. Insulin resistance associated with PCOS can also affect egg quality. Optimising PCOS management before IVF improves outcomes.
An honest answer: supplements and lifestyle changes can support egg health at the margins — they cannot reverse age-related decline
Coenzyme Q10 is critical for mitochondrial energy production. Egg maturation and correct chromosome separation require enormous amounts of cellular energy. As women age, CoQ10 levels in eggs decline. Supplementation — particularly with the more bioavailable ubiquinol form — may support mitochondrial function and reduce aneuploidy in some women, particularly those who are older or poor responders. Some RCTs show improved egg numbers and embryo quality with CoQ10; the evidence is modest but the risk profile is low. Supplement for at least 3 months before an IVF cycle for best effect. Discuss dosing with Dr. Prashanthi Reddy.
DHEA (dehydroepiandrosterone) is a precursor hormone that may increase testosterone levels in the follicular environment, which some studies suggest helps eggs develop more efficiently. It is not recommended for all women — it is used specifically in poor ovarian responders (women who produce fewer eggs than expected despite maximum stimulation). DHEA has androgenic side effects (acne, oily skin, unwanted hair) and interacts with certain medical conditions. It should only be taken if specifically recommended by your fertility specialist. Dr. Prashanthi Reddy assesses each patient individually.
The Mediterranean diet — rich in vegetables, olive oil, fish, legumes, fruits, and whole grains — is consistently associated with better IVF outcomes in multiple observational studies. Its high antioxidant content (vitamins C and E, polyphenols, omega-3 fatty acids) reduces oxidative stress in the follicular environment. This is not a short-term fix — sustained dietary improvement over 3–6 months before an IVF cycle is when benefits accumulate. Processed food, refined sugar, and trans fats should be minimised.
Smoking is the single most damaging modifiable factor for egg quality. Chemicals in cigarette smoke directly damage egg DNA, accelerate follicle loss, and bring on menopause earlier. The effect is dose-dependent and partially reversible with cessation — ideally at least 3 months before treatment. Alcohol should be minimised: even moderate alcohol intake has been associated with lower IVF success rates. Both partners should make these changes — smoking and alcohol also damage sperm quality significantly.
Prolonged exposure of the pelvis to high heat (frequent saunas, very hot baths) may negatively affect follicular development. Chronic psychological stress elevates cortisol, which can disrupt the hormonal environment of the ovary. Stress reduction — exercise, yoga, adequate sleep, psychological support — has a modest supportive role and significantly improves quality of life through the treatment journey.
Age-related chromosomal decline is irreversible. No supplement, diet, or protocol can restore the chromosomal competence that is lost as eggs age. This is a fundamental biological truth that patients deserve to hear clearly — not obscured by marketing language about "reversing the biological clock."
Supplements and lifestyle changes work at the margins by reducing additional modifiable damage. They are most useful in younger women with specific risk factors (smoking, poor diet, oxidative stress) and in poor responders where mitochondrial support may improve egg development. In a 44-year-old with a high aneuploidy rate, supplements will not change that fundamental picture.
When poor egg quality is the primary cause of repeated IVF failure — after multiple cycles with no euploid embryos, in women with advanced reproductive age (typically 43+), or with premature ovarian insufficiency — donor eggs using a younger donor's oocytes offer substantially higher success rates. Dr. Prashanthi Reddy will have a frank and compassionate conversation about this option when it becomes clinically appropriate.
PGT-A (preimplantation genetic testing for aneuploidies) is a laboratory test performed on embryos before transfer. A small number of cells are biopsied from the outer layer (trophectoderm) of each blastocyst and sent for chromosomal analysis. Embryos are classified as euploid (chromosomally normal), aneuploid, or mosaic (a mix).
By transferring only euploid embryos, implantation rates per transfer improve significantly and miscarriage rates fall. PGT-A is most valuable in women over 37, those with recurrent implantation failure, recurrent miscarriage, or previous chromosomally abnormal pregnancies.
Egg quality refers to the chromosomal competence of an egg — whether it carries the correct number of chromosomes (euploid). Only chromosomally normal eggs can develop into embryos capable of implanting successfully and developing into a healthy baby. Egg quality is the single most important determinant of IVF success — more important than laboratory protocols, stimulation doses, or transfer technique.
No. The chromosomal quality of an egg cannot be determined by visual inspection. Embryologists can assess egg maturity (whether it is at the MII stage) and some morphological features, but a visually perfect egg can be aneuploid and a slightly imperfect egg can be euploid. Quality is inferred from fertilisation rates, embryo development, and — most accurately — PGT-A genetic testing of the resulting embryos.
Age is the most important factor affecting egg quality. Women are born with all their eggs already present, and eggs age alongside the woman. The proportion of chromosomally normal (euploid) eggs declines significantly from the mid-30s onward. By the early 40s, the majority of eggs in many women are aneuploid. This explains why IVF success rates decline sharply with age and why age-related infertility is so difficult to overcome with own eggs alone.
No. AMH (anti-Müllerian hormone) is a marker of ovarian reserve — how many eggs remain. It tells us about quantity, not chromosomal quality. A young woman with low AMH may still have excellent-quality eggs. An older woman with normal AMH may have a high proportion of aneuploid eggs. AMH guides the stimulation dose in IVF but does not predict per-egg success rates or the number of euploid embryos you will obtain.
CoQ10 (coenzyme Q10), especially in the ubiquinol form, is the most studied supplement for egg quality. It supports mitochondrial energy production, which eggs rely on heavily during maturation and chromosome separation. Some studies show modest improvements in egg numbers and embryo quality, particularly in older women and poor responders. However, the effect is modest and CoQ10 cannot reverse age-related chromosomal decline. It should be started 3–6 months before an IVF cycle. Dosing should be discussed with Dr. Prashanthi Reddy based on your individual case.
DHEA is a hormone precursor that some studies suggest may improve egg numbers and quality in poor ovarian responders. It is not a standard recommendation for all women. DHEA has androgenic side effects and is contraindicated in some conditions. It should only be taken if your fertility specialist specifically recommends it after a thorough assessment. Do not self-prescribe DHEA based on online recommendations.
Donor eggs are considered when poor egg quality is the primary cause of repeated IVF failure — typically after multiple cycles yielding no euploid embryos, in women of advanced reproductive age (usually 43+), or in cases of premature ovarian insufficiency. Using eggs from a younger donor significantly improves success rates. Dr. Prashanthi Reddy will discuss this option honestly and compassionately when it becomes clinically relevant to your situation.
PGT-A (preimplantation genetic testing for aneuploidies) analyses the chromosomal status of embryos before transfer. It identifies which embryos are chromosomally normal so that only euploid embryos are transferred. It does not improve egg quality — it selects the best embryos from those that were created. PGT-A is most useful in women over 37, those with recurrent implantation failure, recurrent miscarriage, or previous chromosomally abnormal pregnancies. Dr. Prashanthi Reddy will advise whether PGT-A is appropriate in your case.
5,000+ IVF cycles. 19+ years experience. An honest, individualised assessment of your egg quality and the options that give you the best real-world chance of success.
Boduppal: Mon–Sun · 10:30 AM – 1:30 PM | Choutuppal: Tue–Sun · 4:00 PM – 8:00 PM
Dr. E. Prashanthi Reddy · TGMC Reg: 50624 · Boduppal, Hyderabad