Nobody told you that the cornflakes you’ve been eating for breakfast your whole life have the blood-sugar impact of nine teaspoons of sugar. Nobody told you that your ovaries have vitamin D receptors, or that your mitochondria are running on the same molecule that your sperm depend on for motility. Nobody told you that the way you eat in the three months before conception shapes the quality of the egg or sperm that will become your child.
This is that conversation.
Traditional Chinese Medicine has had a dietary framework for fertility for over two thousand years. Modern nutritional science has spent the last two decades catching up to it. What is striking is how closely they converge — not because one borrowed from the other, but because they are both, in the end, describing the same body.
The Insulin-Fertility Connection: The Most Important Thing Nobody Is Saying Clearly
Insulin resistance is the single most impactful metabolic variable affecting reproductive health — in both women and men. Chronically elevated insulin raises LH and stimulates the ovaries to overproduce androgens: the central hormonal mechanism in PCOS. Elevated insulin also promotes systemic inflammation, which impairs egg quality, sperm DNA integrity, and endometrial receptivity.
To make this concrete: a standard portion of white rice has a blood-glucose equivalent of approximately 10 teaspoons of sugar. A large ripe banana: 6. A bowl of cornflakes: 8–9. A chocolate bar: 7.5. These are not moral judgements about food. They are biological facts about what happens to your hormonal environment for the next two hours after eating them — and what happens cumulatively when this is your daily pattern.
→ Related: How PCOS and insulin resistance are addressed through TCM → see Article 5: TCM for Hormone Balance
The TCM Dietary Framework: Warm, Nourishing, Digestive-First
TCM dietary therapy for fertility begins with the digestive system — specifically what TCM calls the Spleen-Stomach axis. A well-functioning digestive system is the root of Blood production, which in turn is the foundation of egg quality, endometrial development, and the capacity to carry a pregnancy. Foods that tax or ‘cold’ the digestive system deplete the very substance from which reproduction is built.
Foods TCM Prioritises
- Warming, cooked foods: soups, stews, congee, roasted vegetables — easier to digest and less energetically depleting than cold or raw food.
- Adequate protein and fat: eggs, meat, fish, legumes, nuts, seeds. These build Blood and nourish Jing (the constitutional Essence that underpins reproductive capacity).
- Dark, Blood-nourishing foods: leafy greens, black sesame, black beans, beets, kidney beans, dark berries.
- Kidney-nourishing foods: walnuts, chestnuts, bone broth, lamb, black beans, seaweed.
Foods TCM Recommends Reducing
- Refined carbohydrates and sugar: create what TCM calls Phlegm-Damp — which maps precisely onto insulin resistance, visceral adiposity, and metabolic inflammation in Western medicine.
- Cold drinks and excessive raw food (especially in cooler weather or constitutionally cold individuals): impair Spleen function and disrupt the digestive warmth needed for Blood production.
- Excessive alcohol: depletes Kidney Yin and generates Damp-Heat.
- Ultra-processed foods: disrupt the Spleen-Stomach axis and are metabolically inflammatory by any measure.
Fertility Supplements: The Evidence-Based Stack
A 2023 systematic review in Reproductive BioMedicine Online — the most comprehensive independent analysis of nutritional supplements and IVF outcomes published to date — identified the Mediterranean diet as the optimal baseline nutritional approach. For women with poor ovarian response, it specifically recommended beginning CoQ10 and DHEA before IVF cycle commencement as superior to control therapies. Here is what the evidence supports:
CoQ10 (Coenzyme Q10)
The most evidence-backed fertility supplement for both women and men. The egg requires extraordinary mitochondrial energy to complete meiosis and support early embryonic development. A 2025 review confirmed CoQ10 improves oocyte quality, ovarian function, and IVF outcomes, particularly in women with poor ovarian reserve or those over 35. Dose: 200mg three times daily (600mg total). Begin three months before any IVF cycle or active conception attempt. Ubiquinol form has better bioavailability for women over 40.
DHEA (Dehydroepiandrosterone)
A hormone precursor with demonstrated benefit for women with confirmed diminished ovarian reserve (DOR). Multiple studies show improved antral follicle count, AMH levels, and ovarian response to stimulation. Important caveats: only beneficial in DOR patients; has not been shown to benefit women with normal ovarian reserve; androgenic side effects are possible. Must be used under medical supervision. Dose: 25–75mg daily for three to six months before IVF.
Methylfolate / Prenatal Folate
Non-negotiable. Critical for neural tube development, follicle growth, egg quality, and sperm DNA integrity. Start at least three months before conception. Women with MTHFR gene variants require methyltetrahydrofolate, not synthetic folic acid. Dose: 400–800mcg daily.
Omega-3 Fatty Acids (EPA + DHA)
Anti-inflammatory and structurally essential for egg cell membranes and sperm morphology. Target: 1g combined EPA+DHA daily. Three servings of fatty fish per week (salmon, sardines, mackerel) provides adequate dietary omega-3. DHA is also essential for foetal brain development from conception onwards.
Vitamin D
Vitamin D receptors are present in ovarian tissue, the uterus, and testicular tissue. Deficiency is extremely common in the UK and Northern Europe. Minimum supplementation: 1,000–2,000 IU daily. Optimally: test blood levels and supplement to reach 50–70 ng/mL (125–175 nmol/L).
Myo-Inositol (for PCOS)
One of the best-evidenced supplements for women with PCOS. Improves insulin signalling, restores ovulation, and improves egg quality in IVF. Dose: 2–4g daily, often combined with D-chiro-inositol in a 40:1 ratio. Now routinely recommended by reproductive endocrinologists alongside medical management of PCOS.
Magnesium
Supports over 300 enzymatic processes including hormone synthesis, sleep quality, insulin sensitivity, and stress regulation. Deficiency is common due to soil depletion and refined food consumption. Magnesium glycinate or threonate are preferred for fertility support and sleep improvement. Better sleep via magnesium has direct reproductive benefits via HPO axis regulation.
Sleep: The Fertility Variable Nobody Takes Seriously Enough
FSH, LH, progesterone, and testosterone are all secreted in pulsatile patterns tied to sleep architecture. Poor sleep increases cortisol, suppresses melatonin (which has a direct antioxidant role in egg quality), increases systemic inflammation, and disrupts the HPO axis. Seven to eight hours of quality sleep per night is not lifestyle advice. It is reproductive medicine.
→ Related: Male fertility supplements and the three-month preparation protocol → see Article 3: Acupuncture for Male Fertility
→ Related: Full supplement protocol within the 90-day conception plan → see Article 7: Your Fertility Window & Best Supplements
Scientific References
Lerchbaum E, Obermayer-Pietsch B. ‘Vitamin D and fertility: a systematic review.’ European Journal of Endocrinology, 2012.
Chiu YH et al. ‘Diet and female fertility: doctor, what should I eat?’ Fertility and Sterility, 2018.
Hammiche F et al. ‘Dietary patterns, ovarian reserve and ovarian response.’ Human Reproduction, 2012.
Showell MG et al. ‘Antioxidants for female subfertility.’ Cochrane Database of Systematic Reviews, 2020.
Xu J et al. ‘Nutritional supplements and IVF: an evidence-based approach.’ Reproductive BioMedicine Online, 2023. doi:10.1016/S1472-6483(23)00869-6
Bentov Y et al. ‘The use of mitochondrial nutrients to improve the outcome of infertility treatment in older patients.’ Fertility and Sterility, 2010.
Genazzani AD et al. ‘Myo-inositol administration positively affects hyperinsulinemia and hormonal parameters in overweight patients with polycystic ovary syndrome.’ Gynecological Endocrinology, 2008.
Unfer V et al. ‘Myo-inositol effects in women with PCOS: a meta-analysis of randomized controlled trials.’ Endocrine Connections, 2017.