Inflammation and egg quality

When fertility is discussed, the conversation almost always circles the same three things: age, hormones and ovarian reserve. They are what gets measured, what appears on the report and what shapes the treatment plan.

There is a fourth factor that rarely enters that conversation, partly because it does not hurt and does not show up in any routine test: chronic low-grade inflammation. This is not the inflammation you notice when you are injured or unwell. It is a sustained, quiet activation of the immune system that can run in the background for years while your cycles stay regular and your hormones stay normal.

Not all inflammation is the same

Acute inflammation is a useful response: it repairs tissue, fights infection and switches off when the work is done. The problem begins when it does not switch off.

Sustained over time, even at low intensity, that response stops protecting and starts interfering. Reviews of the subject describe a negative effect on oocyte quality, folliculogenesis and hormone production.¹ The egg is particularly exposed to this, because its maturation depends on a stable environment held steady for months.

Where it reaches the egg

The best-described route is oxidative stress. Sustained inflammation pushes free radical production beyond what the antioxidant system can neutralise, and that excess damages membranes, proteins and DNA.² In a cell as large and as long-lived as the oocyte, that damage accumulates.³

From there it reaches the second route, which is energetic. Mitochondria produce the ATP the egg needs to mature, to complete fertilisation and to sustain the embryo’s first divisions. In an oxidative environment their output falls, and the literature now points to them as a concrete therapeutic target in assisted reproduction.⁴

There is a third layer, the environment itself. The egg does not mature alone: it does so inside a follicle, surrounded by granulosa cells that feed it and signal to it. Inflammation alters blood flow, hormonal signalling and that cellular conversation, so the follicle stops being the place it was meant to be.

Why it does not show up in testing

This is what makes the subject hard to raise in consultation. A patient can arrive with hormones in range, regular cycles and acceptable ovarian reserve, and still string together cycles with the same outcome: fertilisation goes fine, and then embryo development falls short.

The standard hormone panel measures ovarian function. It does not measure oxidative stress, it does not measure mitochondrial output, and it does not measure inflammatory activity inside the follicle. Those are different questions, and a normal report does not answer them because it never asked.

Where it usually comes from

Low-grade inflammation does not appear on its own. Reviews consistently associate it with three scenarios that also overlap with each other:²

• Metabolic imbalance. Insulin resistance and androgen excess, both common in polycystic ovary syndrome, favour an inflamed follicular microenvironment.
• Endometriosis. Iron overload in ectopic tissue sustains inflammation and oxidative stress, with a documented effect on egg and embryo quality.⁵
• Age. Senescent cells release inflammatory signals that inflame their neighbours, so ageing itself feeds the process.

Sustained stress, insufficient sleep and diet also modulate the immune response, though the evidence there is less specific and worth not overstating.

What it means in an IVF cycle

If the cellular environment is compromised, the effect spreads across the whole cycle: how eggs respond to stimulation, the fertilisation rate, embryo development and how many embryos reach blastocyst.

That explains a pattern many patients recognise: good numbers at the start — enough follicles, eggs retrieved, fertilisation achieved — and a later drop nobody saw coming.

What IVF MORE® can and cannot do

IVF MORE® (Magnetic Ovulatory Restoration) works on exactly that layer: it measures the metabolic state of each egg and acts on the cytoplasm, where the cell’s energy lives, to improve the conditions in which it matures and is fertilised.

What it does not do, and this deserves the same clarity: it is not an anti-inflammatory treatment, it does not reverse endometriosis or insulin resistance, and it does not replace the diagnosis or medical treatment of those conditions. If there is an underlying cause, it has to be treated where it belongs. What the technique contributes is work on the consequence — the oocyte’s energy deficit — once that consequence is already in place.

Listening to what the body is signalling

If you have been through several cycles with the same ending, or if your embryos fertilise well and then stall, the answer may not lie in hormones. Egg quality is almost always discussed in terms of age, and age does matter, but it is not the only thing: the environment in which that egg matured counts too, and it is the one that is rarely measured.

This is not a promise of a result. It is a question worth asking before repeating the same cycle for the third time.

What the metabolic diagnosis measures · Ovarian reserve and egg quality are not the same thing