Are Poor Quality Eggs Behind Your Infertility?

It can feel like the world is moving on while your life stands still. You do everything right: you eat healthy, you track your cycles, you listen to the advice, and yet, month after month, nothing changes. Your tests come back "normal", your periods arrive on time, and still, you are left with questions that no one seems able to answer. If you have ever wondered whether something invisible is holding you back from becoming a parent, you are not alone. Many couples find themselves stuck in this silent, unexplained struggle, searching for answers that just do not come easily.

When Infertility Remains Unexplained: Is It Poor Egg Quality?

About one in ten couples facing infertility will be told that their problem is "unexplained". It is a frustrating diagnosis that really just means: we do not know why. But over the years, we have come to realise that for many of these couples, the real culprit is poor egg quality—a factor that can hide in plain sight, especially in younger women who have regular periods and otherwise reassuring hormone levels.

It is surprisingly common for poor egg quality to go unnoticed. Most people (and sometimes even doctors) assume that if cycles are regular, everything is working fine. The truth is more complicated.

About Oopause: The Hidden Decline

Every woman is born with all the eggs she will ever have. As she ages, her stock of eggs slowly runs out. But before the eggs are all gone, their quality starts to drop. This can happen a decade or more before menopause, even when periods are still regular. This phase is what we call oopause.

During oopause, hormone levels might look normal, and the monthly cycle keeps ticking like clockwork. But behind the scenes, the eggs may not be healthy enough to turn into a baby. This situation can lull both patients and doctors into a false sense of security.

Thankfully, there are now accurate ways to check ovarian reserve, such as:

• A high-resolution vaginal ultrasound to count the number of tiny resting follicles (antral follicle count)
• A blood test for AMH (Anti-Müllerian Hormone) levels

If both the antral follicle count and AMH are low, it suggests diminished ovarian reserve. But even with normal test results, egg quality can sometimes still be an issue, especially in women who have had repeated IVF failures.

For more on this hidden phase, read: Oopause - poor ovarian response

Egg Quality: Not Always About the Numbers

Egg quality is not just about how many eggs are left. Some women have a normal ovarian reserve but still face issues with egg quality. This is usually only discovered after undergoing treatments like IVF or ICSI (Intracytoplasmic Sperm Injection), when we can directly observe the eggs and see how they behave.

There are a few key groups where egg quality problems become clear:

• Low ovarian reserve: These women do not grow many eggs even with stimulation, which is picked up through tests and scans.
• Poor response despite normal tests: Some women have normal AMH and follicle counts, but when we stimulate the ovaries, they do not respond well. The diagnosis is only made during the IVF process.
• Normal numbers, abnormal function: The most challenging group are those who grow a good number of eggs, and hormone levels look fine, but after egg collection, the fertilisation rates are unexpectedly poor. The sperm are healthy, the eggs look normal on the outside, but something is not quite right inside the eggs.

Sometimes, the embryologist notices subtle clues under the microscope: the eggs may have granular or dark areas (cytoplasmic abnormalities), or be unusually fragile. These eggs might not fertilise, or they might not survive the ICSI process. We sometimes call this "fragile egg syndrome".

Sometimes, everything looks perfect on paper—until the moment you need the eggs to work. That is when the hidden problems show up.

Why Are Egg Problems So Difficult to Detect?

Unlike sperm, which are easy to count and analyse, eggs are hidden away in the ovaries and only come into view during IVF. Even under the microscope, egg quality can be difficult to judge. Most eggs look like simple, round blobs, and subtle abnormalities can be missed unless the embryologist is highly experienced and knows what to look for.

To make matters worse, there is currently no simple test—either in the clinic or the lab—that tells us about the health of the egg's cytoplasm (the jelly-like inside of the egg that powers early embryo development). Problems here can prevent fertilisation or lead to poor embryo growth, but they are invisible in routine scans or blood tests.

Another challenge: sometimes, poor fertilisation or embryo development may be due to problems in the IVF lab itself (such as poor culture conditions, infection, or inexperience), not the eggs. That is why documenting egg quality through photographs and videos during IVF is so important. If you have had repeated poor outcomes, it is worth repeating the cycle at a reputable clinic to rule out lab-related issues.

For more on the puzzle of egg versus sperm, see: The sperm or the egg?

Understanding Types of Egg Problems

Doctors are only just beginning to develop better ways of describing different egg issues, similar to how we describe sperm problems. Here are some useful terms:

• Oligo-oocytosis: Very few eggs are produced (low ovarian reserve).
• Terato-oocytosis: Eggs are abnormal in appearance or structure.
• Astheno-oocytosis: Eggs seem weak and fail to fertilise due to internal problems.

Having clear terminology helps in understanding and communicating exactly what the challenge is, so the right solutions can be explored.

What Can Be Done? Practical Solutions at Malpani Infertility Clinic

Discovering an egg quality problem can feel devastating, especially if you thought your cycles and test results meant everything was on track. At Malpani Infertility Clinic, we believe in transparency and clarity. We always document what we see—sharing photos and videos whenever possible—so you are part of the process and can see for yourself.

If poor egg quality is suspected, our approach includes:

• Investigating whether the problem is unique to you or could be related to lab conditions (by reviewing other patients’ results and lab quality)
• Taking detailed images of your eggs for open discussion
• Preferring ICSI over standard IVF, as it can sometimes help overcome subtle egg-related barriers—but only when handled by skilled embryologists, since fragile eggs require special care
• Changing the stimulation protocol in future cycles to see if a different medication or approach improves results

Sometimes, poor egg quality may only occur in a single cycle for reasons we cannot explain. But if it recurs, and if changing protocols does not help, then we have honest conversations about other family-building options such as donor eggs or donor embryos. These are never easy choices, especially for young women who have always had regular periods and normal hormone tests.

We know these discoveries are never easy to process. That is why at Malpani Infertility Clinic, our focus is on empowering you with knowledge, so you are never left in the dark or misled by empty reassurance. If you have questions about your own situation, or if you want to review previous IVF results, we are here to help you understand and make the best decisions for your unique journey.

If you believe poor egg quality might be affecting your fertility, or if you have faced repeated failed cycles with no clear answers, you deserve clarity and honest guidance. Speak to an expert fertility advisor at Malpani Infertility Clinic to get personalised advice and finally take the next step with confidence.