Understanding Fertility

The Role of Nutrition in Fertility (What Science Says)

Mar 29, 2026

Dr. Liz
M.D., F.P.O.G.S.

Nutrition does play a role in fertility. Not in a quick-fix way, but in how it supports your body over time.

When people think about fertility, nutrition is often one of the first things they try to “fix.”

More greens. Less sugar. Supplements. Smoothies.

But with so much information out there, it’s easy to wonder:

Does nutrition actually make a difference? Or is it just another thing to worry about?

The answer is simple, but important.

Nutrition does play a role in fertility. Not in a quick-fix way, but in how it supports your body over time.

Fertility Starts With Overall Health

Your reproductive system doesn’t work in isolation.

It’s connected to everything else—your hormones, metabolism, energy levels, and even how your body responds to stress.

That means the way you nourish your body affects how well these systems function together.

For women, nutrition can influence:

  • Ovulation
  • Hormonal balance
  • Egg quality
  • Uterine health

For men, it affects:

  • Sperm count
  • Sperm quality
  • Motility

So while food isn’t the only factor in fertility, it’s one of the most foundational.

What Science Actually Says

Research consistently shows that dietary patterns—not just individual foods—play a role in reproductive health.

Studies have found that diets rich in:

  • Whole foods
  • Healthy fats
  • Antioxidants
  • Lean proteins

…are associated with better fertility outcomes.

On the other hand, diets high in:

  • Processed foods
  • Trans fats
  • Excess sugar

…may negatively affect reproductive function over time.

This doesn’t mean you need to follow a strict or perfect diet. But it does highlight the importance of consistent, balanced choices.

Key Nutrients That Support Fertility

Instead of focusing on trends, it’s more helpful to understand the nutrients your body actually needs.

1. Folate (Not Just for Pregnancy)

Folate is often associated with pregnancy, but it’s just as important before conception.

It supports:

  • DNA synthesis
  • Cell division
  • Early fetal development

It also plays a role in egg quality and overall reproductive health.

Common sources include:

  • Leafy greens
  • Citrus fruits
  • Legumes

2. Iron

Iron supports oxygen flow in the body and plays a role in ovulation.

Low iron levels have been linked to ovulatory issues in some cases.

Sources include:

  • Red meat
  • Spinach
  • Lentils

Pairing iron-rich foods with vitamin C can improve absorption.

3. Omega-3 Fatty Acids

These healthy fats support hormone production and help reduce inflammation.

They may also contribute to improved egg and sperm quality.

Sources include:

  • Fatty fish
  • Chia seeds
  • Walnuts

4. Antioxidants

Antioxidants help protect cells from oxidative stress, which can affect both egg and sperm quality.

Foods rich in antioxidants include:

  • Berries
  • Nuts
  • Vegetables

For men, antioxidants are especially important in supporting sperm health.

5. Protein Quality Matters

Protein is essential, but the type of protein you consume can also make a difference.

Some studies suggest that:

  • Plant-based proteins may support ovulatory function
  • Balanced intake of lean animal protein can also be beneficial

The key is variety and balance—not restriction.

Blood Sugar and Hormonal Balance

One often overlooked aspect of fertility is blood sugar regulation.

Frequent spikes and crashes in blood sugar can:

  • Disrupt hormone balance
  • Affect ovulation
  • Increase inflammation

This is especially relevant for individuals with conditions like PCOS.

Simple ways to support blood sugar balance:

  • Pair carbohydrates with protein or healthy fats
  • Avoid excessive refined sugar
  • Eat regular, balanced meals

Weight, But Not in the Way You Think

Weight is often discussed in fertility, but it’s not about appearance—it’s about how your body is functioning.

Being underweight or overweight can sometimes affect:

  • Hormone levels
  • Ovulation
  • Overall reproductive health

However, the focus should not be on extreme dieting.

Instead, it should be on:

  • Nourishing your body
  • Supporting sustainable habits
  • Improving metabolic health

Nutrition for Men Matters Too

Fertility conversations often focus on women, but nutrition plays a major role in male fertility as well.

Nutritional factors can influence:

  • Sperm count
  • Motility
  • DNA quality

Diets rich in antioxidants, healthy fats, and essential nutrients have been linked to better sperm health.

This reinforces an important point:

Fertility is a shared responsibility—and nutrition is part of that for both partners.

What Nutrition Cannot Do

While nutrition is important, it’s also important to be realistic.

Food alone cannot:

  • Guarantee pregnancy
  • Replace medical treatment when needed
  • Solve all fertility challenges

But it can support your body in a way that improves overall conditions for conception.

Think of it as building a stronger foundation—not forcing an outcome.

A More Balanced Approach

With so much information online, it’s easy to fall into extremes.

Cut this. Avoid that. Follow this exact diet.

But fertility doesn’t require perfection.

A more sustainable approach looks like:

  • Eating whole, balanced meals
  • Including a variety of nutrients
  • Staying consistent over time

It’s not about doing everything “right.”
It’s about supporting your body in a way that feels realistic and maintainable.

Where Supplements Fit In

In some cases, nutrition alone may not be enough to meet your body’s needs.

This is where supplements can play a role.

They may help:

  • Fill nutritional gaps
  • Support hormonal balance
  • Provide targeted fertility support

However, they should complement a healthy lifestyle—not replace it.

Fertility is not just about one change—it’s about how different factors come together over time.

Nutrition is one of those factors.

At Fertile.right, the goal is to make fertility and wellness feel more approachable, more informed, and easier to navigate.

Because understanding your body is one of the most important steps in supporting it.