When people start thinking about fertility, nutrition is often one of the first things that comes up. Women and couples are told to “eat well,” “take a vitamin,” or “cut back on alcohol.” While these messages are well intentioned, fertility nutrition is far more nuanced than general healthy eating, and it looks different for everyone.

At Maven Centre, fertility care recognises that nutrition plays a meaningful role not only in supporting conception, but in laying the foundations for a healthy pregnancy, birth and long-term health. Importantly, this nutrition support is most effective when it is personalised.

Why Nutrition Matters Before Pregnancy

Nutrition for fertility doesn’t begin with a positive pregnancy test. The months before conception are one of the most important windows for influencing reproductive health.

Eggs and sperm take time to develop. What you eat today helps shape reproductive cells over the coming weeks and months, meaning nutrition in the three months before conception can influence egg quality, sperm quality, hormone balance, implantation and early embryo development.

This period also marks the beginning of what is known as the first 1,000 days: from conception through to a child’s second birthday. Nutrition during this time is linked to long-term health outcomes for children including metabolic, immune and developmental health. Supporting fertility through nutrition is therefore about much more than becoming pregnant; it’s about supporting lifelong wellbeing.

Why a Dietitian Is an Essential Part of Fertility Care

Fertility nutrition is a specialised area of practice. While general nutrition advice is widely available, it doesn’t account for the complexity of reproductive health, hormonal balance, medical conditions or individual dietary needs.

Accredited practising dietitians with training in fertility and women’s health bring a deep understanding of:

• Nutritional needs before and during pregnancy
• How conditions such as polycystic ovarian syndrome (PCOS), endometriosis or thyroid conditions affect fertility
• How digestion, absorption and gut health influence nutrient status
• How to support nutrition alongside fertility treatments
• When food is enough and when targeted supplementation may be required

Dietitians don’t provide rigid meal plans or one-size-fits-all rules. Instead, they work with individuals and couples to develop realistic, sustainable nutrition strategies that fit their lifestyle, preferences and fertility journey.

Why Individualised Nutrition Matters

No two fertility journeys are the same. People come to fertility care with different:

• Medical histories and diagnoses
• Family histories of hormonal or metabolic conditions
• Food intolerances, allergies or digestive issues
• Cultural, ethical or personal food preferences
• Body compositions and metabolic health
• Experiences with fertility treatment or pregnancy loss

A nutrition approach that supports one person may be ineffective, or inappropriate, for another. Tailored nutrition ensures dietary advice supports hormonal health and fertility without adding unnecessary restriction, stress or guilt.

Fertility Is a Shared Journey: Nutrition for Both Partners

Although much of fertility care focuses on the person carrying the pregnancy, nutrition is equally important for both partners.

Sperm health is sensitive to inflammation, oxidative stress and overall metabolic health. What the partner eats in the months before conception can influence sperm count, movement and quality — all of which play a role in fertilisation and early embryo development.

Supporting nutrition for both partners not only improves biological outcomes but helps couples feel like they are working together toward a shared goal.

Nutrition and Sperm Health

Rather than focusing on individual nutrients, dietary patterns are key to supporting sperm health.

A Mediterranean-style way of eating: this dietary pattern is rich in vegetables, fruits, whole grains, legumes, nuts, seeds, olive oil, fish and lean proteins and is commonly encouraged. This style of eating supports sperm health through:

• Omega-3 rich foods such as oily fish, walnuts, chia and flaxseeds
• Antioxidant-rich plant foods that protect sperm from oxidative stress
• Limiting highly processed foods and processed meats, which can negatively affect sperm quality

Dietitians help translate these principles into everyday meals that fit a person’s tastes, budget and lifestyle.

Nutrition and Egg Health

Egg quality is influenced by inflammation, oxidative stress and metabolic health — all of which are affected by diet.

Key dietary principles that support egg health include:

• Eating a wide variety of colourful fruits and vegetables for antioxidants
• Including healthy fats, particularly omega-3 fats from fish, nuts and seeds
• Optimising fat intake by reducing highly processed and fried foods and increasing natural sources of poly- and mono-unsaturated fats
• Choosing gentler cooking methods, such as steaming, baking and slow cooking, to reduce harmful compounds formed at high temperatures

Rather than focusing on “perfect eating,” dietitians help patients make practical shifts that reduce stress on the body and support ovarian health.

Ovulation, Hormones and the Role of Nutrition

Ovulation is sensitive to many lifestyle factors, including nutrition.

Alcohol

Alcohol intake has been linked to reduced fertility. While the exact amount that affects ovulation varies between individuals, alcohol may interfere with hormonal balance, egg maturation and implantation. Dietitians work with people to try and reduce or eliminate alcohol using practical strategies.

Body Weight and Energy Balance

Both low and high body weight can impact ovulation. Dietitians help people safely gain or lose weight where needed, without extreme restriction, over-exercise or diet culture pressure. The goal is hormonal balance, not rapid weight change.

Nutrition in Polycystic Ovary Syndrome (PCOS)

PCOS is one of the most common causes of ovulatory infertility and is often driven by insulin resistance. This is one of the most common referrals we see at The Maven Centre.

When insulin doesn’t work effectively the body produces more of it. This can lead to increased androgen hormones, irregular ovulation, inflammation and difficulty maintaining a healthy weight. Over time, this hormonal disruption can impact fertility and increase miscarriage risk.

Nutrition strategies for PCOS focus on:

• Supporting steady blood sugar levels
• Including balanced meals with protein, fibre and healthy fats
• Reducing highly refined carbohydrates and ultra-processed foods
• Supporting gut health through fibre-rich plant foods

Emerging research also highlights the role of gut health in PCOS, with reduced gut diversity linked to higher androgen levels. For more details, please read our previous blog post about nutritional strategies in PCOS.

Nutrition in Endometriosis and Adenomyosis

Endometriosis and adenomyosis are associated with inflammation and oestrogen-driven processes, both of which can affect fertility.

Dietary approaches often focus on:

• Increasing vegetable intake, particularly cruciferous vegetables
• Including omega-3 rich foods such as oily fish
• Supporting antioxidant intake through fruits, vegetables and whole foods
• Reducing intake of highly processed foods, trans and saturated fats, and excess alcohol

Rather than restrictive elimination diets, dietitians help patients make targeted changes that support symptom management while maintaining nutritional adequacy.

What About Fertility Treatments?

Nutrition absolutely plays a supportive role during fertility treatments. Research shows improved outcomes when nutrition is considered in these treatments. Filling nutritional gaps and following healthier eating patterns have been shown to improve clinical and embryological IVF outcomes.

The Bigger Picture: Diet and Fertility Patterns

Research consistently shows that overall dietary patterns matter more than individual foods. Diets rich in whole foods, plant variety, healthy fats and adequate protein are associated with better ovulatory function and fertility outcomes.

Dietitians help people identify small, meaningful changes that fit into real life and recognise that stress, perfectionism and rigid food rules can be counterproductive during fertility care.

Supplements: When Food Isn’t Enough

While food is always the foundation, some people may need supplements due to medical conditions, absorption issues or increased nutritional requirements.

Rather than self-prescribing, working with a dietitian ensures supplements are:

• Appropriate for the individual
• Safe alongside fertility treatments
• Used at the right time and dose
• Reviewed as needs change

A Compassionate, Individualised Approach to Fertility Nutrition

Fertility journeys can be emotionally complex and unpredictable. Nutrition care should feel supportive, not overwhelming.

At Maven Centre, dietitians are part of a multidisciplinary team that understands fertility isn’t just biological – it’s personal. Individualised nutrition support helps ensure dietary advice aligns with medical care, lifestyle realities and each person’s unique fertility journey.

Optimising nutrition before conception is an investment not only in fertility, but in the health of future generations.