Written by Dr. Merritt Jones, LAc, DAIM, FABORM

What Actually Affects Egg Quality — And What You Can Do About It

If you have spent any time down the egg quality rabbit hole, you have probably come across the same short list: CoQ10, an anti-inflammatory diet, reduce stress. That information is not wrong. But it is incomplete, and it skips the part I find most clinically useful and most motivating for patients.

Egg quality is not just about which supplements you take. It is about the environment your eggs are developing in for months before ovulation, and that environment is something you can actually influence. This post walks through what egg quality really means, what shapes it at a cellular level, and what the evidence supports, from both a Western and Chinese medicine perspective.

What “Egg Quality” Actually Means

When fertility specialists talk about egg quality, they are really asking: can this egg do its job? Can it mature properly, fertilize successfully, and support early embryo development? The most important factor is chromosomal integrity, meaning whether the egg has the correct number of chromosomes. Chromosomally abnormal eggs are the leading cause of failed fertilization, failed implantation, and early pregnancy loss.

At the cellular level, this comes down to mitochondria. Think of mitochondria as the egg’s batteries. Oocytes contain more mitochondria than almost any other cell in the body, and that is not an accident. The process of meiosis, the cell division that produces a mature egg with the right number of chromosomes, is extraordinarily energy-intensive. When those batteries are running low or damaged, the division process is more likely to go wrong.

Age is the biggest factor affecting mitochondrial function in eggs. Over time, mitochondrial DNA accumulates damage, energy production declines, and the egg’s ability to complete meiosis accurately decreases. This is the biology behind the well-known relationship between age and egg quality.

Here is the part I want you to hold onto: while age is not something we can change, mitochondrial function is not purely fixed. Oxidative stress, inflammation, metabolic disruption, and chronic stress all accelerate mitochondrial decline. Addressing those factors is where integrative care has a real and meaningful role.

The Part Most People Never Hear About: The Follicular Environment

This is the piece I find most patients have never encountered, and it genuinely changes how they think about what they can do.

Every egg spends the months before ovulation nestled inside a fluid-filled sac called a follicle. Think of that follicular fluid as the egg’s neighborhood. It delivers everything the egg needs to develop: hormones, growth factors, antioxidants, nutrients. But it also picks up whatever is circulating in your system, including stress hormones, inflammatory signals, and oxidative byproducts. The egg does not develop in isolation. It develops in whatever environment you are creating.

Research on follicular fluid has turned up some striking findings. One study found that fluid from unfertilized follicles contained significantly higher concentrations of cortisol than fluid from fertilized ones, suggesting that a stress-saturated follicular environment may directly impair an egg’s ability to fertilize (Jimena et al., 1992, Acta Endocrinol; as reviewed in Joseph & Whirledge, 2017, Int J Mol Sci). Oxidative stress markers in follicular fluid have also been shown to correlate with lower fertilization rates and poorer embryo quality (Artini et al., 2022, Int J Mol Sci).

Melatonin is one of the most potent antioxidants in follicular fluid, and interestingly, it is present there at higher concentrations than in the bloodstream, suggesting the ovary is actively pulling it in. Studies have found that follicular fluid melatonin levels correlate with antral follicle count, AMH, number of retrieved oocytes, and embryo quality (Espino et al., 2017; Zheng et al., 2018). It is one reason why sleep is not just a lifestyle suggestion for fertility patients.

The takeaway: supporting egg quality is not just about what you put in your body. It is about the neighborhood your eggs are growing up in. A follicle that is swimming in cortisol, low on antioxidants, and inflamed is not a good incubator, no matter how well-stocked your supplement shelf is.

What Degrades That Environment

Understanding what challenges the follicular environment helps make sense of why the interventions below actually matter. The main factors:

Chronic stress and HPA axis dysregulation

When you are under chronic stress, your hypothalamic-pituitary-adrenal (HPA) axis stays switched on, keeping cortisol elevated. As we just covered, that cortisol makes its way into follicular fluid. It also alters FSH and LH signaling in ways that can disrupt follicular development and ovulation timing (Joseph & Whirledge, 2017, reviewing Jimena et al., 1992). Stress is not just something you feel. It has a measurable presence in the environment your eggs are developing in.

Oxidative stress

Reactive oxygen species (ROS) are a normal byproduct of cellular metabolism, a little like exhaust from an engine. The problem comes when they build up faster than the body can clear them, damaging mitochondrial DNA, impairing the meiotic process, and aging the follicle prematurely. Poor sleep, processed food, environmental toxins, and chronic inflammation all turn up the exhaust (Zhang & Wu, 2023, Reprod Biol Endocrinol).

Systemic inflammation

Conditions like endometriosis and PCOS/PMOS are associated with elevated inflammatory markers in follicular fluid, which directly affect the quality of the oocyte microenvironment. This is one reason patients with these diagnoses often benefit from a more targeted approach. Even lower-grade metabolic inflammation driven by blood sugar instability or insulin resistance can affect ovarian function.

Age-related NAD+ depletion

NAD+ is a coenzyme the mitochondria rely on for energy production and DNA repair. Think of it as the fuel that keeps the batteries charged. It declines naturally with age, and its depletion in oocytes is increasingly recognized as a key driver of age-related decline in egg quality. Replenishing NAD+ precursors is an active and genuinely promising area of fertility research.

The Three-Month Window

You have probably heard about a “90-day window” for egg quality. Here is what that actually means.

The full process of follicle development, from primordial follicle to mature egg ready for ovulation, takes close to a year. But the final stage of that journey, when the follicle transitions from preantral to preovulatory, takes approximately 90 days. This is the window when the egg is most actively responding to hormonal signals, most sensitive to its environment, and most accessible to the kinds of interventions we are discussing (as estimated in Zhang & Wu, 2023, Reprod Biol Endocrinol).

A useful way to think about it: what you do today is influencing the eggs that will ovulate three months from now. The neighborhood your eggs are growing up in right now is being shaped by your sleep, your stress load, your diet, your inflammation levels. That is not meant to feel like pressure. It is meant to feel like agency.

What Actually Supports Egg Quality

Lifestyle foundations

I want to be direct here: these are not background suggestions. They are the foundation. No supplement protocol will compensate for chronically poor sleep and a stress response that never fully switches off.

• Sleep. Melatonin is produced during deep sleep, and as we covered above, it is one of the primary antioxidants your follicles actively concentrate. Chronic sleep disruption directly reduces its availability in the ovarian environment. There is no supplement that replicates what a good night of sleep does for your follicular fluid.
• Blood sugar stability. Insulin resistance and blood sugar swings drive ovarian inflammation and alter follicular fluid composition. An anti-inflammatory, lower-glycemic way of eating matters here, not for weight, but because of its direct effect on the environment inside your follicles.
• Stress regulation. Given what we know about cortisol and follicular fluid, managing your nervous system is not a soft wellness suggestion. It has a direct physiological rationale. Whether that is breathwork, movement, therapy, acupuncture, or something else entirely, find what actually brings your stress response down and treat it as a non-negotiable.

Supplements: what the evidence supports

The supplement landscape for fertility is genuinely overwhelming, and it is easy to end up taking a dozen things without a clear rationale for any of them. What follows is a focused look at what has the most clinical support. A few things to keep in mind: supplements build on lifestyle, not the other way around. More is not always better. And dosing matters, so please talk with your provider before starting any protocol, especially if you are in active fertility treatment.

• CoQ10 / Ubiquinol. The most well-established supplement for egg quality. CoQ10 is a mitochondrial cofactor that helps keep those cellular batteries running and reduces oxidative damage. A 2024 systematic review and meta-analysis found that women with diminished ovarian reserve undergoing IVF/ICSI achieved more high-quality embryos, higher fertilization rates, and more retrieved oocytes with CoQ10 pretreatment (Lin et al., 2024, Ann Med). Ubiquinol is the active, more bioavailable form.
• NAD+ precursors (NMN/NR). Remember that fuel-for-the-batteries analogy? This is where it gets practical. NAD+ declines with age, and restoring it through precursor supplementation is an emerging focus in fertility research. A 2026 systematic review in the Journal of Assisted Reproduction and Genetics found that NMN consistently improved mitochondrial function, reduced oxidative stress, and supported chromosomal integrity in animal models. Human trials are underway. The science is promising; it is just not fully established yet in people (Noh et al., 2026, J Assist Reprod Genet).
• Melatonin. As discussed above, your follicles actively concentrate melatonin, and its levels there correlate with IVF outcomes and markers of ovarian reserve (Espino et al., 2017; Zheng et al., 2018). Supplemental melatonin has shown positive findings for oocyte and embryo quality in IVF research, though optimal dosing is still being studied.
• NAC (N-acetyl cysteine). A precursor to glutathione, one of the body’s primary internal antioxidants. NAC is particularly relevant for patients with endometriosis or PCOS/PMOS, where oxidative stress and inflammation in follicular fluid tend to be elevated. Rather than acting as a standalone antioxidant, it helps your body build its own defense.
• Myo-inositol. Most relevant for patients with insulin resistance or PCOS/PMOS. Myo-inositol improves insulin signaling in the ovary, supports FSH receptor function, and has been shown to improve oocyte quality and reduce the gonadotropin doses needed in IVF.
• Omega-3 fatty acids. Anti-inflammatory and important for cell membrane integrity. The membrane of an egg affects how well it can be fertilized, and omega-3s help maintain the right phospholipid environment. They also support broader anti-inflammatory signaling in the ovary.
• Vitamin D. Deficiency is extremely common and consistently linked to poorer fertility outcomes. Vitamin D receptors are present in granulosa cells, the very cells that surround and support developing eggs, and adequate levels appear to support follicular development and hormone regulation. It is worth testing your level before supplementing, since how much you need depends on where you are starting from.

The Eastern Lens: Kidney Jing and Reproductive Essence

One of the things I genuinely love about Chinese medicine is that it has always understood fertility as something that requires long-term tending, not a short-term fix. The framework for this is Kidney Jing, often translated as “essence,” which governs development, aging, and the fundamental vitality of the reproductive system.

Jing has two components: the part you inherited (what you were born with) and the part that is shaped by how you live. Sleep, nourishment, rest, and the management of chronic stress either replenish or deplete that reserve over time. In this framework, burning the candle at both ends is not just exhausting. It is literally spending down your reproductive reserves.

This maps surprisingly well onto what Western research is now describing. The inherited component of Jing corresponds to the primordial follicle pool and mitochondrial DNA you were born with. The nourished component corresponds to all the lifestyle and environmental factors that either support or deplete ovarian function over time.

In practice, Chinese medicine treatment for egg quality focuses on nourishing Kidney Yin and Yang, supporting Blood circulation to the uterus and ovaries, and regulating Liver Qi, the system most disrupted by chronic stress and emotional strain. The goal is not to override biology but to create the most hospitable terrain possible for the eggs developing right now.

How Acupuncture Fits In

Acupuncture works differently than a supplement. Its effects are systemic, and several of its mechanisms connect directly to the follicular environment we have been talking about.

The research points to a few key areas:

• Ovarian blood flow. Acupuncture has been shown to increase blood flow to the ovaries and uterus. Better circulation means better delivery of nutrients and oxygen to developing follicles, and likely a more favorable follicular fluid composition.
• HPA axis regulation. Acupuncture has measurable effects on the stress response, including modulation of cortisol and beta-endorphin levels. Given what we know about cortisol in follicular fluid, this goes well beyond helping someone feel more relaxed on the table.
• Follicular fluid metabolomics. A 2023 randomized controlled trial in Medicine (Baltimore) looked at acupuncture in women of advanced reproductive age undergoing IVF. The acupuncture group (n=43) had significantly improved fertilization rates, high-quality embryo rates, and cumulative pregnancy rates compared to controls (n=40). The researchers also analyzed follicular fluid and identified three metabolic pathways associated with better oocyte developmental potential, including retinol metabolism and glycerophospholipid metabolism (Xia et al., 2023, Medicine). In other words, acupuncture appeared to change what was actually happening inside the follicle. As with much of the acupuncture research in this space, the sample size was modest and replication in larger trials is needed.

For patients with diminished ovarian reserve specifically, a 2023 systematic review and meta-analysis in Frontiers in Endocrinology (13 RCTs, 787 patients) found acupuncture was associated with significant reductions in FSH and improvements in antral follicle count, two key markers of ovarian reserve (Lin et al., 2023).

A few honest caveats: most of this research has been in IVF and DOR populations, and trial quality varies. The mechanism research is genuinely compelling; the clinical evidence is promising but not yet definitive. What the data does consistently show is that duration matters. A single session before transfer is not the same as a sustained course of treatment. Three months or more is where the meaningful outcomes tend to show up.

Where to Start

Whether you are actively trying to conceive, preparing for IVF, or just thinking ahead, here is how I usually approach this with patients:

• Give yourself a three-month runway if at all possible. Consistency over time matters far more than any single intensive week.
• Start with the foundations: sleep, blood sugar stability, and stress regulation. Get the neighborhood right before adding supplements.
• Talk with your provider before starting any supplement protocol. CoQ10, NAD+ precursors, and melatonin are generally well-tolerated, but the right doses and timing depend on your individual situation and any concurrent treatment.
• Consider whether acupuncture makes sense as part of your plan, particularly if stress regulation, cycle irregularity, or conditions like endometriosis are part of your picture.

You do not have to figure all of this out alone. At Natural Harmony Reproductive Health, supporting egg quality is some of the work we find most meaningful, and we love helping patients build a plan that actually makes sense for where they are. We offer complimentary 10-minute consultations if you would like to talk through your situation.

References

Artini PG, et al. Oxidative Stress-Related Signaling Pathways Predict Oocytes’ Fertilization In Vitro and Embryo Quality. Int J Mol Sci. 2022;23(21):13442.

Espino J, et al. Melatonin levels in follicular fluid as markers for IVF outcomes and predicting ovarian reserve. Fertil Steril. 2017. PMID: 28062641.

Jimena P, Castilla JA, Peran F, Ramirez JP, Vergara F Jr, Molina R, Vergara F, Herruzo A. Adrenal hormones in human follicular fluid. Acta Endocrinol. 1992;127(5):403-406. PMID: 1471451.

Joseph DN, Whirledge S. Stress and the HPA Axis: Balancing Homeostasis and Fertility. Int J Mol Sci. 2017;18(10):2224.

Lin G, Liu X, Cong C, Chen S, Xu L. Clinical efficacy of acupuncture for diminished ovarian reserve: a systematic review and meta-analysis of randomized controlled trials. Front Endocrinol. 2023;14:1136121.

Lin G, Li X, Jin Yie SL, Xu L. Clinical evidence of coenzyme Q10 pretreatment for women with diminished ovarian reserve undergoing IVF/ICSI: a systematic review and meta-analysis. Ann Med. 2024;56(1):2389469. doi:10.1080/07853890.2024.2389469.

Noh H, Sen Gupta S, Seshadri S, Viñals Gonzalez X. NMN supplementation as a strategy to improve oocyte quality: a systematic review and transcriptomic analysis. J Assist Reprod Genet. 2026;43:51-65. doi:10.1007/s10815-025-03720-1.

Xia Q, et al. The role of acupuncture in women with advanced reproductive age undergoing IVF-ET: a randomized controlled trial and follicular fluid metabolomics study. Medicine (Baltimore). 2023;102(36):e34768.

Zhang W, Wu F. Effects of adverse fertility-related factors on mitochondrial DNA in the oocyte: a comprehensive review. Reprod Biol Endocrinol. 2023;21:27.

Zheng M, et al. Melatonin concentration in follicular fluid is correlated with antral follicle count (AFC) and in vitro fertilization (IVF) outcomes in women undergoing assisted reproductive technology (ART) procedures. Gynecol Endocrinol. 2018;34(5):446-450.

Medically reviewed by the author | June 2026

Dr. Merritt Jones has spent her career at the intersection of Traditional Chinese Medicine, integrative Western medicine, and functional nutrition, building a practice rooted in the belief that true reproductive health requires caring for the whole person. In 2015, she founded Natural Harmony to create the kind of clinic she wished had existed when navigating her own endometriosis diagnosis — bringing both clinical depth and lived experience to every patient relationship, because to her, this work has always been personal.