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Protein in the first trimester | Pregnancy Power Hour
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Nutrition · trimester 1 · Macronutrient

Protein in the first trimester

RDI: Pregnancy RDA: ~71g/day (IOM)

In the first trimester, your protein needs begin to increase from pre-pregnancy levels, supporting foundational growth while generally aligning with adequate prior intake.

2 min read

Quick answer

In the first trimester, your protein needs begin to increase from pre-pregnancy levels, supporting foundational growth while generally aligning with adequate prior intake.

During your first trimester, while the foundational growth of your baby is underway, your body's protein needs are beginning to shift, generally aligning with your pre-pregnancy intake if it was already adequate. Protein is a fundamental macronutrient, essential for building and repairing tissues, producing enzymes and hormones, and supporting your baby's rapid cellular development. This early phase of pregnancy lays the groundwork for all that is to come, making thoughtful nutritional choices a gentle way to support your body and your growing baby.

Evidence suggests that overall protein needs during pregnancy increase from approximately 46 grams per day for non-pregnant individuals to about 71 grams per day as pregnancy progresses. While this is an average across pregnancy, the shift begins in these early weeks. Focusing on consistent, balanced protein intake now can help meet these evolving demands. It's not about consuming vast quantities, but rather ensuring a steady supply through your daily meals to support the intricate processes happening within you.

When considering protein sources, you have many options. Animal proteins, such as eggs, fish, lean meats, and dairy, provide all essential amino acids in single foods, making them efficient choices. For those who prefer plant-based options, a variety of plant proteins like legumes, soy, quinoa, and hemp can collectively provide a complete amino acid profile throughout your day. The idea that you must combine specific plant proteins at every meal to achieve completeness has been widely debunked; variety across your daily intake is key. This flexibility allows you to make informed decisions that align with your preferences and dietary patterns.

It's reassuring to know that true protein deficiency is uncommon in high-income countries. However, ensuring you're meeting your needs supports healthy fetal development, as protein-energy malnutrition has been associated with low birth weight. On the other hand, balance is also important; some studies indicate that excessive protein intake, defined as more than 25% of total calories, may be associated with adverse outcomes. This highlights the importance of a well-rounded approach to your nutrition, much like how we consider other vital nutrients such as Biotin (B7) in the first trimester for overall wellness.

Among the many excellent protein sources, eggs are particularly valuable not just for their protein content but also for choline, a nutrient often found to be deficient in many diets. Incorporating eggs can be a simple way to support both your protein and choline needs during this crucial time. As you move through your pregnancy, your nutritional focus may adapt, much like considering specific needs for Biotin (B7) in the second trimester. Supporting your digestive health with considerations like Probiotics in the first trimester can also enhance nutrient absorption, making your protein intake even more effective. Always discuss your specific dietary needs and any concerns with your healthcare provider, as they are your best resource for personalized guidance.

Keep reading

  • RelatedProtein in the second trimesterIn your second trimester, as your baby's growth accelerates, your body's protein needs increase significantly to support their rapid development.
  • RelatedProtein in the third trimesterIn the third trimester, protein intake becomes particularly crucial to support your baby's rapid growth and prepare your body for colostrum production.
  • RelatedCarbohydrates in the first trimesterIn the first trimester, carbohydrates are often the most tolerable macronutrient amidst nausea, providing essential energy for both you and your baby's early development.
  • RelatedCollagen in the first trimesterIn the first trimester, collagen primarily contributes amino acids to support your body's general protein needs, with no specific pregnancy-related benefits currently demonstrated.

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Common questions

How much protein do I need in the first trimester?+

Your protein needs begin to increase from approximately 46g/day (non-pregnant) towards an average of 71g/day over the course of pregnancy.

Are plant proteins sufficient during pregnancy?+

Yes, plant proteins like legumes, soy, quinoa, and hemp can provide all essential amino acids when consumed with variety throughout your day.

Brittany Nance

“Pregnancy is under-supported at every week. This is the kind of clear, calm guidance I give my one-on-one clients — and the questions worth taking back to your provider.”

Brittany Nance · Pregnancy Wellness Consultant · full-spectrum doula

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Written by Brittany Nance, Pregnancy Wellness Consultant· BADT Full Spectrum Doula · Founder, Pregnancy Power Hour
Last reviewed July 1, 2026

This is evidence-informed education from a birth-doula perspective, not medical advice. Always discuss your individual situation with your prenatal care provider.

Related
Tofu in the first trimester
In the first trimester, tofu offers a gentle, nutrient-dense plant protein source that can be particularly helpful for managing early pregnancy symptoms while providing essential building blocks.
  • RelatedBeans in the first trimesterIn the first trimester, beans offer crucial plant protein, folate, and iron, providing sustained energy and supporting early fetal development amidst potential nausea and fatigue.