How much protein do you need for fertility?

There is no special "fertility protein" requirement beyond meeting your general daily needs, which for most adults is roughly 0.8 to 1.2 grams per kilogram of body weight. What the research on protein for fertility highlights more than total amount is protein source: for women, getting more protein from plants relative to animal sources is associated with better ovulatory function.

Why source matters more than quantity

Protein supplies the amino acids your body uses to build hormones, tissues, and, during pregnancy, a growing baby. Meeting your needs matters, but the fertility research draws a sharper line around where that protein comes from. Plant proteins like beans, lentils, and nuts arrive packaged with fiber, folate, and micronutrients that support blood sugar and hormone balance, whereas a diet very heavy in red and processed meat has been linked in some studies to more ovulatory disruption.

RELATED: What foods support fertility?

What the research suggests

Analysis from a longitudinal study of healthy reproductive-age women found that low intake of vegetable protein was associated with altered ovulatory function and shifts in reproductive hormones across the cycle. This builds on an older landmark analysis from the Nurses' Health Study II, which reported that replacing some animal protein with plant protein was associated with a lower risk of ovulatory infertility. The consistent message is that adding plant proteins, rather than simply eating more protein overall, is the fertility-relevant move.

Practical takeaways

• Aim to meet your general protein needs, roughly 0.8 to 1.2 grams per kilogram of body weight for most adults, rather than a special fertility target
• Include a plant protein at most meals, such as lentils, chickpeas, beans, tofu, nuts, or seeds
• Balance animal proteins with plant sources rather than relying heavily on red and processed meat
• Pair protein with fiber-rich carbohydrates for steadier blood sugar
• If pregnancy follows, protein needs rise, so it is a habit worth building early

When to talk to your provider

If you follow a restricted diet, are managing a health condition, or are unsure how much protein is right for you, a provider or registered dietitian can help you set a target that fits your body and goals.

Frequently asked questions on protein and fertility

Do I need a high-protein diet to get pregnant? 
No. Meeting your general needs is enough, and the research favors including more plant protein rather than eating a very high total amount.

Is plant or animal protein better for fertility? 
Both have a place. Research links a higher share of plant protein with better ovulatory function, so the goal is balance rather than eliminating either.

Protein is a supporting player in fertility, and the simplest upgrade is variety, leaning on plants alongside quality animal sources.

A note from WeNatal: an easy way to close the protein gap

Hitting your protein needs is easier said than done during a busy season, and it becomes even more important heading into pregnancy. WeNatal Prenatal Protein+ offers a clean, fertility-minded way to support daily protein intake alongside a varied diet. Our free guide shows how protein fits the preconception window.