Choline

Choline is an essential nutrient your body uses for several jobs at once. It builds phosphatidylcholine, the main fat in every cell membrane you have. It is the raw material for acetylcholine, the neurotransmitter your brain uses for memory, attention and muscle signalling. It also feeds the methylation cycle as a methyl donor, working alongside folate and vitamin B12 to keep homocysteine in check.^[1]

If you have heard you should take choline for focus, mood, liver health or pregnancy planning, this page covers the forms that exist, how much you need and what the research shows for women.

Forms of choline

Choline is used in supplements in several chemical forms. They differ in cost, in elemental choline delivered per gram and in how much human research backs them.

Choline bitartrate is choline bound to tartaric acid. It delivers around 41% elemental choline by weight. It is well absorbed and is the form used in most clinical research on choline intake.^[1]

Choline citrate is choline bound to citric acid. Bioavailability is similar. The elemental yield per gram is lower than bitartrate.

Phosphatidylcholine is the form choline takes inside cell membranes and the form found in egg yolk and soy lecithin. Only about 13% of it by weight is choline. Doses need to be much higher to match the same elemental amount.^[1]

Alpha-GPC (alpha-glycerophosphocholine) is a more concentrated form, around 40% choline by weight. It crosses the blood-brain barrier readily and is studied for cognitive performance, mostly in older adults. Costs are higher than bitartrate.

CDP-choline (citicoline) is another brain-targeted form used in clinical neurology. The cognition evidence is more developed than for alpha-GPC. It is not a good fit for general nutritional intake.

How much you need

The European Food Safety Authority sets the Adequate Intake for choline at 400 mg per day for adult women. Pregnancy raises that to 480 mg and breastfeeding to 520 mg.^[1]

Most women do not get there from food. A 2022 survey of 283 pregnant women in Germany found a median intake of 260 mg per day. Only 7% met the Adequate Intake.^[4] A 2024 study of more than 3,700 women of childbearing age across eight Latin American countries found the same gap region-wide.^[5] Eggs and liver are the densest food sources. If you do not eat them often, you will fall short.

The science on women's health

Brain function and focus

Choline feeds two systems your brain depends on. Acetylcholine drives attention, memory encoding and motor control. Phosphatidylcholine builds the membranes your neurons signal across. When choline runs low, both processes slow.^[1]

Clinical research on choline supplementation for cognition in healthy adult women is still thin. Most cognition trials have looked at older adults with memory complaints. The biology is well mapped. The dose-response in healthy women is not yet pinned down by large trials.

Pregnancy and fetal development

This is the area with the most active research. A 2025 systematic review pooled four randomised trials and five observational studies of prenatal choline and child neurodevelopment. The authors concluded that current evidence is not yet sufficient to confirm or rule out a benefit. Several individual trial results pointed in a positive direction. Most measures came back null. The review flagged the same problem that runs through nutrition research in pregnancy. Trials have been small and short.^[3]

What is established is the gap between intake and need. Both intake studies above show the same pattern. Most women of reproductive age fall well short of the Adequate Intake at the moment they need choline most.^[4][5]

Liver and lipid metabolism

Choline is needed to package fat for export from the liver as VLDL particles. When choline is low, fat builds up in liver cells. A 2025 randomised trial in 79 patients with non-alcoholic fatty liver disease tested 2,400 mg of phosphatidylcholine daily for 12 weeks. The supplemented group showed lower liver fat scores, lower fibrosis scores, lower liver enzymes and lower triglycerides than controls.^[6] That dose is much higher than typical nutritional intake. The mechanism is the same one that operates at lower doses every day.

EU authorised health claims

Under EU law, choline is officially authorised to carry the following health claims:

• Choline contributes to normal lipid metabolism
• Choline contributes to the maintenance of normal liver function
• Choline contributes to normal homocysteine metabolism^[2]

References

[1] National Institutes of Health, Office of Dietary Supplements. Choline: Fact Sheet for Health Professionals. ods.od.nih.gov/factsheets/Choline-HealthProfessional

[2] Commission Regulation (EU) No 432/2012 establishing a list of permitted health claims made on foods. Official Journal of the European Union, 25 May 2012. eur-lex.europa.eu

[3] Gould JF, Hines S, Best KP, et al. Choline during pregnancy and child neurodevelopment: a systematic review of randomized controlled trials and observational studies. Nutrients 2025;17(5):886. doi.org/10.3390/nu17050886

[4] Roeren M, Kordowski A, Sina C, Smollich M. Inadequate choline intake in pregnant women in Germany. Nutrients 2022;14(22):4862. doi.org/10.3390/nu14224862

[5] Herrera-Cuenca M, Yépez García MC, Cortés Sanabria LY, et al. Inadequate intake of choline and essential fatty acids in Latin American childbearing-age women as a regional pre-conceptional disadvantage: ELANS results. Nutrients 2024;16(18):3150. doi.org/10.3390/nu16183150

[6] Sedhom SS, El Wakeel LM, Barakat EMF, et al. The impact of choline supplementation on oxidative stress and clinical outcomes among patients with non-alcoholic fatty liver disease: a randomized controlled study. Therapeutic Advances in Chronic Disease 2025;16:20406223251358659. doi.org/10.1177/20406223251358659