Choline is classified as an essential nutrient, meaning the body cannot synthesise sufficient amounts and dietary intake is required. Yet it has never received the public health attention given to other B vitamins, and most adults are unaware of it. Dietary surveys consistently find that 90 percent of adults consume below the adequate intake of 550mg per day for men and 425mg per day for women. This is not a minor shortfall. Choline deficiency produces liver disease, cognitive impairment, and impaired methylation.
Choline and Cognitive Function
Acetylcholine is the primary neurotransmitter for memory formation, attention, and learning. Choline is its direct dietary precursor. A large study of over 2,000 adults found that higher dietary choline intake was associated with better cognitive performance, lower white matter hyperintensity volumes, and reduced rates of dementia over a 10-year follow-up. The association was independent of other dietary quality measures.
Best Dietary Sources of Choline
- Eggs: the most bioavailable source of choline, providing approximately 150mg per egg almost entirely in the yolk; two eggs daily provides roughly 50 percent of the daily adequate intake
- Beef liver: the single most choline-dense food at approximately 430mg per 100g
- Salmon: approximately 290mg per 100g cooked
- Chicken breast: approximately 120mg per 100g cooked
- Cruciferous vegetables: broccoli, Brussels sprouts, and cauliflower provide modest choline alongside their other benefits