Fertility Diet: What to Eat to Boost Your Chances of Conception

What you eat before and during your attempts to conceive has a measurable impact on egg quality, sperm health, hormonal balance, and implantation success. A fertility diet is not about perfection — it is about building the nutritional foundation your body needs to support a healthy pregnancy.

This guide breaks down the science of fertility nutrition, the best foods to include, what to limit or avoid, and how to supplement smartly to fill any gaps — with support from Conceive Plus fertility supplements, trusted by couples across Australia and worldwide.

The Science Behind Fertility and Nutrition

A landmark study from Harvard Medical School — the Nurses' Health Study — followed over 18,000 women for 8 years and found that dietary patterns strongly influenced ovulatory infertility risk. Women who ate more plant protein, high-fat dairy, low-glycaemic carbohydrates, iron, and folate had significantly lower rates of ovulatory infertility compared to those with poor dietary patterns.

For men, a 2012 review in the Journal of Nutrition found that diets rich in antioxidants, zinc, selenium, and omega-3 fatty acids were associated with better sperm concentration, motility, and morphology. Conversely, high intake of processed meats and full-fat dairy was linked to reduced sperm quality.

The message is clear: both partners benefit from dietary optimisation. Starting a fertility-focused diet at least 3 months before trying to conceive gives the body time to respond — this aligns with the 90-day development cycle of both eggs and sperm.

Key Nutrients for Female Fertility

Folate (as methylfolate): Critical for egg quality and early neural tube development in the embryo. Most experts recommend 400–800mcg daily, starting at least one month before conception. Choose methylfolate over synthetic folic acid for better bioavailability.

Coenzyme Q10 (CoQ10): This antioxidant is concentrated in the mitochondria of egg cells. Research shows CoQ10 supplementation can improve egg quality and ovarian response in older women — a critical factor for women over 35.

Vitamin D: Up to 40% of Australian women may be vitamin D deficient. Low vitamin D is associated with reduced IVF success rates and implantation failure. Food sources include fatty fish, egg yolks, and fortified dairy. Sun exposure and supplementation may be necessary.

Iron: Non-haem iron (from plant sources) was found in the Harvard Fertility Study to be associated with lower ovulatory infertility risk. Good sources include lentils, tofu, spinach, quinoa, and fortified cereals.

Omega-3 fatty acids: Specifically DHA and EPA, found in oily fish, support egg maturation, embryo development, and hormonal regulation. Aim for 2–3 servings of oily fish per week (choose low-mercury options like salmon, sardines, and mackerel).

Iodine: Essential for thyroid function, which directly affects fertility and early pregnancy. Found in seafood, dairy, and iodised salt. Many Australian women are mildly iodine deficient.

B vitamins (B6, B12): Support hormonal balance, healthy luteal phase function, and homocysteine metabolism. Found in leafy greens, eggs, legumes, and lean meats.

Key Nutrients for Male Fertility

Zinc: Critical for testosterone production, sperm development, and protecting sperm DNA from oxidative damage. Found in oysters, beef, pumpkin seeds, and chickpeas. Deficiency is linked to low sperm count and poor motility.

Selenium: An antioxidant that protects sperm from oxidative stress and supports morphology. Brazil nuts (just 2–3 per day), tuna, eggs, and sunflower seeds are excellent sources.

L-carnitine: An amino acid found in high concentrations in the epididymis — where sperm mature. Studies show L-carnitine supplementation significantly improves sperm motility in men with low motility.

Lycopene: Found in tomatoes (especially cooked), watermelon, and red peppers, lycopene is a powerful antioxidant with specific benefits for sperm DNA integrity and morphology.

CoQ10: Just as important for sperm as for eggs. CoQ10 is concentrated in sperm mitochondria and supports motility. Multiple clinical trials have shown supplementation improves sperm parameters in subfertile men.

The Fertility Diet Food List

Build your meals around these fertility-supportive foods:

Vegetables and fruits:

• Leafy greens (spinach, kale, silverbeet) — folate, iron, vitamin K
• Broccoli, Brussels sprouts — folate, sulforaphane
• Berries (blueberries, raspberries) — antioxidants, vitamin C
• Tomatoes (especially cooked) — lycopene
• Avocado — healthy fats, folate, vitamin E
• Citrus fruits — vitamin C, folate

Proteins:

• Oily fish (salmon, sardines, mackerel, trout) — omega-3, selenium, vitamin D
• Eggs — choline, vitamin D, protein
• Legumes (lentils, chickpeas, beans) — plant protein, iron, folate, fibre
• Tofu — plant protein, iron, isoflavones
• Lean poultry — protein, zinc, B vitamins

Healthy fats:

• Extra virgin olive oil — anti-inflammatory monounsaturated fats
• Walnuts — omega-3, vitamin E
• Chia seeds and flaxseeds — ALA omega-3, fibre
• Avocado — vitamin E, folate

Whole grains:

• Quinoa — complete protein, iron, folate
• Oats — B vitamins, zinc, fibre
• Brown rice, barley — slow-release carbohydrates to support blood sugar stability

Dairy (full-fat):
The Harvard Fertility Study found that one or more daily servings of full-fat dairy (whole milk, full-fat yoghurt, ice cream) was associated with lower ovulatory infertility risk. This is an exception to standard dietary advice and appears specific to fertility.

What to Limit or Avoid on a Fertility Diet

Trans fats: Strongly associated with increased ovulatory infertility in research. Found in commercially fried foods, some margarines, and processed snacks. Check labels for "partially hydrogenated oils."

Refined carbohydrates and sugar: High-glycaemic foods spike blood sugar and insulin, which can disrupt ovulation — particularly in women with PCOS. Limit white bread, pastries, sugary drinks, and processed cereals.

Alcohol: Even moderate alcohol consumption has been associated with reduced fertility in women and impaired sperm quality in men. Most fertility specialists recommend avoiding alcohol entirely when trying to conceive.

Processed meats: Associated with reduced sperm quality. Limit sausages, bacon, hot dogs, and cured meats. Choose fresh, unprocessed meat instead.

High-mercury fish: Mercury accumulates in larger, longer-lived fish and can damage developing embryos. Avoid shark, swordfish, orange roughy, and limit tuna to 2–3 serves per week.

Caffeine: The evidence is mixed, but most guidelines recommend limiting caffeine to under 200mg per day (approximately 1–2 cups of coffee) when trying to conceive. High caffeine intake has been linked to increased miscarriage risk.

Soy in excess: Soy isoflavones can act as weak phytoestrogens. Moderate consumption (1–2 servings per day) is generally considered safe, but very high intake may affect hormone balance in sensitive individuals.

Supplementing a Fertility Diet

A nutrient-dense diet is the foundation, but supplements fill gaps and provide therapeutic doses of key nutrients. Conceive Plus fertility supplements are formulated specifically for couples trying to conceive, providing clinically relevant doses of:

• Methylfolate (not synthetic folic acid) for superior bioavailability
• CoQ10 to support egg and sperm quality
• Vitamin D3 and K2 for hormonal support and implantation
• Zinc, selenium, and iron at fertility-supportive doses
• B-complex vitamins for energy and hormonal balance

Both a women's and men's formula are available, recognising that fertility is a shared endeavour. Starting supplementation 3 months before trying to conceive provides the greatest benefit.

Sample Fertility Diet Day

Breakfast: Rolled oats with berries, walnuts, and a tablespoon of ground flaxseed. Green tea (low caffeine) or water.

Snack: Full-fat Greek yoghurt with a drizzle of honey. 2 Brazil nuts.

Lunch: Lentil and vegetable soup with wholegrain bread. Side salad with avocado, spinach, and extra virgin olive oil.

Snack: Apple with almond butter. A small handful of pumpkin seeds.

Dinner: Grilled salmon with roasted broccoli, cherry tomatoes, and quinoa. Drizzle of olive oil and lemon.

Evening: Conceive Plus fertility supplement with a glass of water.

Frequently Asked Questions

Q: How quickly does diet affect fertility?
A: Eggs take approximately 90 days to mature, and sperm take 64–74 days to develop. Dietary changes made 3 months before trying to conceive can meaningfully improve egg and sperm quality.

Q: Can diet alone treat infertility?
A: Diet can optimise fertility but cannot treat structural or medical causes of infertility (such as blocked tubes, endometriosis, or azoospermia). If you have an underlying condition, dietary changes complement — not replace — medical treatment.

Q: Does a vegetarian or vegan diet affect fertility?
A: Plant-based diets can be fertility-supportive when well-planned. Key nutrients to monitor include vitamin B12, iron, zinc, omega-3 (as DHA/EPA), iodine, and vitamin D — supplementation is often necessary.

Q: Is the Mediterranean diet good for fertility?
A: Yes. The Mediterranean diet — high in vegetables, fruit, whole grains, legumes, fish, and olive oil — closely aligns with research on fertility-supportive dietary patterns. Several studies have linked it to better IVF outcomes and reduced time to conception.

Q: Should both partners change their diet?
A: Absolutely. Male fertility is equally important and equally influenced by nutrition. Both partners adopting a fertility-supportive diet for at least 3 months before trying to conceive offers the best outcomes.

Q: Does caffeine really affect fertility?
A: High caffeine intake (over 300mg/day) has been associated with reduced fertility and increased miscarriage risk in some studies. Most guidelines recommend staying under 200mg/day (1–2 coffees) as a precaution.

Q: What supplements should I take on a fertility diet?
A: At minimum: folate (as methylfolate), vitamin D, and iodine for women; folate, zinc, selenium, and CoQ10 for men. Conceive Plus offers comprehensive formulas for both partners.

Q: Is it safe to eat sushi when trying to conceive?
A: Avoid raw fish if you are already pregnant. When trying to conceive, raw fish carries a small risk of listeria and other pathogens. Most fertility nutritionists recommend caution. Cooked fish and low-mercury options are safest.

Nourish Your Body for Conception

A fertility diet is one of the most meaningful changes you can make when trying to conceive. It does not require perfection — it requires consistency. Prioritise whole, nutrient-dense foods, minimise processed foods and alcohol, and fill nutritional gaps with a quality fertility supplement.

Conceive Plus fertility supplements complement your diet with the specific nutrients your body needs during preconception — formulated for both women and men, backed by science, and trusted by couples across Australia. Start nourishing your fertility today.