Why choline matters, and where it hides
Choline supports cell membranes, the neurotransmitter acetylcholine, and early brain development, which is why it comes up most in pregnancy. The body makes some, but not enough to coast on, according to the NIH fact sheet, a public-domain US government document.
Primary source 01 / 04
Humans can produce choline endogenously in the liver, mostly as phosphatidylcholine, but the amount that the body naturally synthesizes is not sufficient to meet human needs
So diet has to cover the rest, and this is where a vegan reads carefully. The concentrated sources sit on the animal side of the ledger.
Primary source 02 / 04
The main dietary sources of choline in the United States consist primarily of animal-based products ... meat, poultry, fish, dairy products, and eggs
The plant list is shorter but not empty, and it lines up with foods a vegan already eats a lot of.
Primary source 03 / 04
Cruciferous vegetables and certain beans are also rich in choline, and other dietary sources of choline include nuts, seeds, and whole grains.
Nearly everyone falls short, not just vegans
It would be easy to file choline as a vegan problem. The data says it is closer to a national one. The Adequate Intake is 550 mg a day for men and 425 mg for women, and most people miss it.
Primary source 04 / 04
Most people in the United States consume less than the AI for choline.
The practical takeaway: a vegan who leans on soy, beans, cruciferous vegetables, nuts and whole grains can reach a reasonable intake, and anyone who is pregnant or planning to be should treat choline as a nutrient worth counting, plant-based or not. A supplement or a lecithin source closes the gap when the diet does not.

