Choline For Fertility

Choline is one of the most underappreciated nutrients in fertility nutrition. While it has long been recognised as essential during pregnancy, a growing body of research is now establishing its importance before conception too, for both egg quality, early embryo development and sperm health. Yet research from the UK and Europe suggests that many women of childbearing age are not consuming enough choline, making it one of the most common nutritional gaps in women trying to conceive.

What is choline and why does it matter for fertility?

Choline is an essential nutrient that the body requires daily but cannot produce in sufficient quantities on its own. It was formally recognised as an essential nutrient by the US Institute of Medicine in 1998 and is now the subject of a rapidly expanding body of research covering fertility, pregnancy and infant development.

Choline plays several fundamental biological roles that are directly relevant to reproductive health:

• Cell membrane structure: Choline is a key component of phosphatidylcholine, which forms the structural basis of every cell membrane in the body, including eggs, sperm and early embryonic cells.
• Methylation: Choline is a methyl donor, supporting DNA methylation and gene expression, which are critical processes in cell division and early development.
• Neurotransmitter production: Choline is a precursor to acetylcholine, a neurotransmitter involved in nerve signalling and muscle function.
• Mitochondrial function: Emerging research suggests choline plays a role in supporting mitochondrial health, which is central to egg quality and embryo development.

Choline and female fertility

For women trying to conceive, choline may support fertility through its roles in cell membrane integrity and methylation. Research suggests choline may support healthy egg development and early embryo viability by maintaining the structural and biochemical processes that eggs and embryos depend on during the earliest stages of development.¹

A 2026 review published in Ginekologia Polska synthesising current clinical recommendations confirmed that adequate choline intake during preconception and pregnancy is important for supporting healthy cell division and fetal development, placing choline alongside folate as a key preconception nutrient.²

Most prenatal multivitamins provide only 50 to 250mg of choline, significantly below the EFSA recommended intake of 400mg per day for adults, which increases further during pregnancy and breastfeeding. This gap is one reason a dedicated choline supplement is increasingly discussed alongside a standard prenatal multivitamin for women trying to conceive.

Choline and male fertility

Choline is also relevant for sperm health. The genes involved in choline metabolism are active in the testes, and variations in these genes have been associated with differences in sperm motility. Choline also contributes to sperm membrane structure and flexibility, both of which are important for sperm function and the ability to fertilise an egg.³

For male partners preparing for conception, ensuring adequate choline intake from diet and supplementation may be a worthwhile addition to a broader preconception supplement plan.

How choline and folate work together

Choline and folate are closely linked through methylation pathways. Both are methyl donors, and they can partially compensate for each other when one is deficient. However, research suggests they are not fully interchangeable, and adequate intake of both is important for optimal preconception and pregnancy outcomes. Women who are already taking a bioavailable folate supplement may still benefit from ensuring their choline intake is sufficient, particularly as many prenatal formulations do not include meaningful choline doses.

For more on the role of folate and the distinction between folate and folic acid, read our guide to folate vs folic acid here.

How choline and inositol relate to each other

Choline and inositol are sometimes discussed together because both are involved in cell membrane structure and signalling pathways. However they support reproductive health through distinct mechanisms. Inositol is more closely associated with insulin signalling and ovarian function, particularly in the context of PCOS, while choline is more directly linked to cell membrane integrity, methylation and early embryo development. They are complementary rather than interchangeable. Read our full guide to choline and inositol for fertility here.

Foods naturally high in choline

Including choline-rich foods alongside supplementation provides the best foundation. Good dietary sources include:

• Eggs (especially the yolk) — one of the richest dietary sources of choline
• Liver and other meats — beef, chicken liver, pork and poultry all provide meaningful choline
• Fish and seafood — salmon, cod and tuna are good sources
• Dairy — milk, yoghurt and cottage cheese provide moderate amounts
• Legumes and soy — soybeans, edamame, chickpeas and beans are useful plant-based sources
• Vegetables — cruciferous vegetables including broccoli and Brussels sprouts, as well as potatoes and mushrooms
• Grains and seeds — wheat germ and whole grains provide smaller but useful amounts

Even with a varied diet, reaching the EFSA recommended intake of 400mg per day through food alone can be challenging, particularly for women who do not eat eggs or meat regularly. This is where a dedicated supplement may be helpful.

What to look for in a choline supplement when trying to conceive

When selecting a choline supplement for preconception use, a few factors are worth considering:

• Form: Common forms include choline bitartrate and phosphatidylcholine, both of which support choline levels. The label should show the actual choline content per serving rather than just the weight of the ingredient.
• Dose: EFSA recommends 400mg per day for adults, with higher amounts recommended during pregnancy. Most prenatal multivitamins provide 50 to 250mg, leaving a significant gap that a dedicated supplement may help address.
• Complementary nutrients: Choline works alongside folate, vitamin B12 and vitamin B6. Ensuring these are also covered as part of your overall supplement plan may help support the methylation pathways that choline and folate share.
• Tolerability: Some people notice a mild odour at higher doses. Taking choline with food and starting at a lower dose may help.

FAQs: choline and fertility

Should I take choline when trying to conceive?

Emerging research suggests choline may support egg quality, early embryo development and sperm health, making it a relevant nutrient for both partners during the preconception period. Given that deficiency is common and most prenatal multivitamins provide insufficient choline, a dedicated supplement may be worth considering alongside your existing plan. If you would like personalised guidance, book a free 1:1 fertility product consultation with our team.

How much choline should I take when trying to conceive?

EFSA recommends 400mg per day for adult women, increasing to 480mg during pregnancy and 520mg during breastfeeding. Most prenatal multivitamins provide significantly less than this, which is why a dedicated choline supplement may be useful. Always consult your healthcare provider for guidance on the right dose for your individual situation.

Is choline the same as inositol?

No. Choline and inositol are different nutrients that support reproductive health through distinct mechanisms. Choline is primarily relevant for cell membrane integrity and methylation, while inositol is more closely associated with insulin sensitivity and ovarian function. They may be complementary. Read our full guide to choline and inositol here.

Does choline work with folate?

Yes. Choline and folate work together through shared methylation pathways and both are important for healthy cell division and early fetal development. They partially compensate for each other but are not fully interchangeable, and adequate intake of both is recommended during preconception and pregnancy. Read more about folate here.

Can men take choline for fertility?

Yes. Choline plays a role in sperm membrane structure and motility, and may be worth including in a male preconception supplement plan alongside nutrients such as CoQ10 and zinc. The Zita West Vitamen male fertility supplement covers a broad range of preconception nutrients for male partners.

References

1. Zhan X et al. (2021). Choline supplementation influences ovarian follicular development. Frontiers in Bioscience (Landmark Ed). PubMed
2. Krupa A et al. (2026). Active folates and choline in prenatal development: current recommendations and clinical implications. Ginekologia Polska. PubMed
3. Lazaros L et al. (2012). Phosphatidylethanolamine N-methyltransferase and choline dehydrogenase gene polymorphisms are associated with human sperm concentration. Asian Journal of Andrology. PMC

External references: NHS: Vitamins and minerals  

This content is for educational purposes only and is not intended to diagnose, treat, or replace medical advice. Always consult your healthcare provider before starting any new supplement.