Choline AI Table
| Life stage | AI (mg/day) |
|---|---|
| Infant 0–6 mo | 125 |
| Infant 7–12 mo | 150 |
| 1–3 years | 200 |
| 4–8 years | 250 |
| 9–13 years | 375 |
| 14–18 years | 400 |
| 19+ years | 550 (M) / 425 (F) |
| Pregnancy | 450 |
| Lactation | 550 |
| Upper limit, adult | 3,500 (fishy-odor basis) |
| Food | Portion | mg | %DV |
|---|---|---|---|
| Beef liver, braised | 3 oz | 356 | 65% |
| Beef top sirloin, cooked | 3 oz | 156 | 28% |
| Egg, hard-boiled | 1 large | 147 | 27% |
| Soybeans, roasted | 1/2 cup | 107 | 19% |
| Chicken breast, roasted | 3 oz | 72 | 13% |
| Cod, cooked | 3 oz | 71 | 13% |
| Potato, baked | 1 large | 57 | 10% |
| Milk, 2% | 1 cup | 43 | 8% |
| Quinoa, cooked | 1 cup | 43 | 8% |
Choline is the newest nutrient on this whole family of tables: the Institute of Medicine only recognized it as essential in 1998, after folate fortification research revealed that it shares a busy metabolic corner with folate and B12 - the methyl-donation pathway that builds DNA and, critically, the neurotransmitter acetylcholine. Because intake data was thin, every row is an Adequate Intake, not an RDA: 550 mg for men, 425 for women, 450 in pregnancy, 550 while breastfeeding.
The food story is unapologetically animal: beef liver owns the top (356 mg per 3 ounces, 65% of the Daily Value), eggs are the everyday hero at 147 mg each (27%), and after sirloin, soybeans, chicken and cod the shelf drops into single percentages - which is exactly why the shortfall is so common. By federal survey data, roughly nine in ten American adults - and especially men, who eat fewer eggs than their grandfathers did - fall short of the AI.
The reason to care is developmental: choline is the raw material for cell membranes and for the fetal and infant brain, where animal studies link intake to hippocampal development and lifelong memory performance - the reason the pregnancy row steps up to 450 mg. The rest of the file is calmer: deficiency in adults shows up mostly as muscle and liver changes, and the ceiling (3,500 mg) exists for a symptom few will meet - a fishy body odor from overdose.
How to use
- Find your row: 550 mg for men and 425 for women from 19; 400 for teens 14-18; 375 at 9-13; 250 at 4-8 and 200 at 1-3; 125-150 in infancy; pregnancy 450 and breastfeeding 550 - note the pregnancy jump is bigger in absolute terms than folate's.
- Close the gap with the yolk: one egg is 147 mg, so two eggs at breakfast put a woman at 70% of her AI before lunch; beef, chicken and fish at dinner add 60-70 mg per serving, and a cup of milk or Greek yogurt another 40-50 - the diet that 'rehabilitated' eggs after the cholesterol scare is the one that fixed choline.
- Think hardest about pregnancy and early infancy: the fetal brain concentrates choline faster than any other tissue, prenatal vitamins famously carry little or none of it, and formula is required to include it - so the pregnancy lane here runs on food (eggs, meat, soybeans, beans) rather than the pill bottle.
Frequently asked questions
How much choline do I need per day?
The NIH sets Adequate Intakes: 550 mg for men and 425 for women from 19; 400 for teens 14-18 (450 during teen pregnancy); 375 at 9-13; 250 at 4-8; 200 at 1-3; 125-150 mg in infancy. Pregnancy needs 450 and breastfeeding 550. There is no RDA - the evidence base for an exact requirement predates the data - and the Daily Value on labels is 550 mg. About nine in ten US adults land below the AI, men more than women.
What foods are highest in choline?
Beef liver stands alone at 356 mg per 3 ounces (65% DV); eggs are the everyday staple at 147 mg per large egg (27%). Then the animal-protein shelf: top sirloin 156 mg per 3 ounces (28%), roasted soybeans 107 per half cup (19%), chicken breast 72 (13%), cod 71 (13%). The plant-and-dairy edge is thin: one cup of milk is 43 mg, potatoes about 57 per large, quinoa 43 per cooked cup, and beans and lentils similar - which is why vegan diets need deliberate planning (soybeans, quinoa, legumes) to approach the AI.
Why did choline take until 1998 to be recognized?
Because it hides in plain sight: choline is everywhere in food and the body makes some in its own liver, so classic deficiency disease never pointed at it - the classic deficiency experiment produced liver damage in men on choline-free diets only in the 1980s-90s. It earned essential-nutrient status when researchers mapping one-carbon metabolism (the folate/B12/methionine network that builds DNA) realized choline was a parallel methyl donor with its own requirement - hence it entered the DRI tables in 1998, the last common nutrient to arrive.
Does choline matter in pregnancy - and why do prenatal vitamins skip it?
The developmental data is the strongest case choline has: the fetal brain concentrates choline rapidly, and animal studies show maternal intake shaping hippocampal development and memory into adulthood - one reason the pregnancy AI steps up to 450 mg. Most prenatal vitamins carry little or none because pills got formulated before the 1998 recognition and choline salts are bulky. The practical pregnancy plan is food-first: two eggs plus a serving of meat or soy covers most of the 450, and choline-fortified prenatals now exist for the rest.
Can you get too much choline?
The UL is 3,500 mg a day for adults - about six times the highest AI - set on a strange and harmless-looking endpoint: trimethylaminuria-like fishy body odor, as gut bacteria convert excess choline to trimethylamine. High chronic intake from supplements (not food) has also raised questions about cardiovascular markers (the TMAO pathway), which is another reason the case for choline is made at the egg and the liver plate, not the megadose bottle. No toxicity comes from food at realistic intakes.