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Choline in the third trimester | Pregnancy Power Hour
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Nutrition · trimester 3 · Vitamin

Choline in the third trimester

RDI: Pregnancy AI: 450 mg/day (IOM)

During the third trimester, choline is critically important for your baby's rapidly developing brain, particularly for hippocampal growth and future cognitive function.

2 min read

Quick answer

During the third trimester, choline is critically important for your baby's rapidly developing brain, particularly for hippocampal growth and future cognitive function.

As you move through the third trimester, your body prioritizes the transfer of choline to your baby, making this period especially significant for supporting their rapidly developing brain. Choline, often an under-recognized nutrient, plays a critical role in fetal brain development, with particular importance for the hippocampus—the area of the brain associated with memory. This intense deposition of choline into the fetal brain during these final months underscores its essential contribution to your baby's foundational cognitive structures.

Evidence suggests that most prenatal vitamins contain either no choline or less than 100 mg, falling short of the recommended intake. In fact, over 90% of US pregnancies do not meet the advised choline intake, highlighting a significant gap in nutritional awareness and support. This nutrient is as fundamental as others you might be tracking, like Iron in the third trimester or Calcium in the third trimester, which also see increased demands during this final stage of pregnancy.

Research has even linked maternal choline intake during pregnancy to offspring cognitive performance at age seven, published in the American Journal of Clinical Nutrition. This connection offers a compelling reason to consider your choline intake thoughtfully. While your care provider is your best resource for specific guidance, understanding the role of key nutrients empowers you to make informed decisions about your prenatal nutrition.

Focusing on food-first approaches can be a gentle way to increase your choline intake. Eggs are a wonderful source, with one egg providing approximately 150 mg of choline, primarily concentrated in the yolk. Other beneficial food sources include beef, salmon, chickpeas, and soybeans. For those following vegetarian or vegan diets, careful planning or supplementation becomes even more important to ensure adequate intake of this crucial nutrient, much like planning for Iodine in the first trimester sets a strong foundation.

Supporting your body and your baby's development with evidence-based nutrition can bring a sense of calm and clarity during this exciting time. You get to decide how you approach your nutritional needs, and exploring these options can be a practical step in feeling confident and prepared for birth and beyond. Always discuss any dietary changes or supplementation with your care provider to ensure it aligns with your individual health needs.

Keep reading

  • RelatedCholine in the second trimesterDuring the second trimester, choline remains a vital nutrient, particularly for the ongoing development of your baby's brain, supporting memory and cognitive function.
  • RelatedCholine in the first trimesterIn the first trimester, choline plays a vital, often-overlooked role in supporting your baby's neural tube development and laying the foundation for cognitive function.
  • RelatedDHA — Omega-3 in the third trimesterThe third trimester is a pivotal time for DHA accumulation in your baby's developing brain and retina, making informed intake especially supportive.
  • RelatedIodine in the third trimesterIn the third trimester, consistent iodine intake remains vital for your baby's continued brain development and to support your body's sustained metabolic needs through late pregnancy and into breastfeeding.

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Common questions

Why is choline particularly important in the third trimester?+

The third trimester is crucial for choline deposition into the fetal brain, specifically supporting the hippocampus, which is vital for memory and cognitive function.

Are most pregnant individuals getting enough choline?+

No, over 90% of US pregnancies do not meet the recommended choline intake, and many prenatal vitamins contain little to none of this nutrient.

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
Folate in the third trimester
In the third trimester, consistent folate intake remains crucial for maternal well-being and to prevent late-pregnancy depletion, supporting your body's ongoing demands.
  • RelatedVitamin B12 in the third trimesterIn the third trimester, Vitamin B12 continues its vital role in supporting your baby's neurological development and red blood cell formation, crucial for both your well-being and their growth.