Foods High in Choline: Are Eggs Enough?
Foods high in choline are a short list, and one food sits far ahead of the rest: the egg. One large hard-boiled egg carries 147 milligrams of choline, according to the NIH Office of Dietary Supplements, against a daily Adequate Intake of 550 milligrams for men and 425 for women. Most Americans do not get there: in the largest analysis of U.S. intakes, only about 8 percent of adults met the target, and egg eaters averaged almost double the choline of non-eaters. So is an egg enough? One is not. Two, on a plate built with the other choline foods below, gets most people over the line. This article ranks the foods by serving, does the arithmetic for a full day, and explains where a citicoline supplement fits — beside the food, not instead of it.
In this article: What choline does, and why the liver cannot cover it · How much choline per day: why the number is an "adequate intake" · Foods high in choline, ranked by a real serving · Why the egg carries the argument · Building a day that reaches the number · What the food numbers cannot tell you · Where Great Billiom Citicoline fits
What choline does, and why the liver cannot cover it
Choline gets less attention than the vitamins because it is not one. The NIH calls it "an essential nutrient that is naturally present in some foods and available as a dietary supplement." Two of its jobs matter here. First, "the body needs choline to synthesize phosphatidylcholine and sphingomyelin, two major phospholipids vital for cell membranes" — every cell, brain cells included, is wrapped in choline-built material. Second, "choline is needed to produce acetylcholine, an important neurotransmitter for memory, mood, muscle control."
The reason it counts as essential is a limit in the liver. The NIH states that "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." Harvard's Nutrition Source puts it the same way: the body makes some of its own in the liver, "but not enough to meet daily needs." The rest has to arrive on a plate.
How much choline per day: why the number is an "adequate intake"
The target is 550 milligrams a day for adult men and 425 for adult women. The label on that number matters: it is an Adequate Intake, not a Recommended Dietary Allowance. The NIH explains why: "Insufficient data were available to establish an EAR for choline, so the FNB established AIs for all ages." The AI rests on a liver marker — the NIH says it was based on serum alanine aminotransferase levels in depletion studies — which is to say it was set at the amount that kept a liver enzyme normal, not at the amount that produced any particular mental benefit.
In a 2009 review in Nutrition Reviews, Steven Zeisel and Kerry-Ann da Costa of the University of North Carolina summarize what happened when healthy adults were fed a choline-deficient diet under supervision: "77% of the men and 80% of the postmenopausal women developed signs of subclinical organ dysfunction," while "less than half of premenopausal women developed such signs." Their explanation is that "endogenous biosynthesis of choline is regulated by estrogen," so premenopausal women make more of their own. Their broader point: "there is a significant variation in the dietary requirement for choline" between people, driven by common gene variants. One number cannot fit everyone.
Europe set its bar lower: the European Food Safety Authority's 2016 opinion "sets an AI at 400 mg/day based on the average observed choline intake in healthy populations in the European Union." Two expert bodies, two methods, a target between 400 and 550 milligrams. The U.S. figures are used below.
Foods high in choline, ranked by a real serving
The useful way to read a choline table is by serving, not per 100 grams, because nobody eats 100 grams of wheat germ. The figures are the NIH's, for portions as served.
Food (NIH serving) | Choline | Share of the 425 mg women's AI |
Beef liver, pan fried, 3 oz | 356 mg | 84% |
Egg, hard boiled, 1 large | 147 mg | 35% |
Beef top round, braised, 3 oz | 117 mg | 28% |
Soybeans, roasted, ½ cup | 107 mg | 25% |
Chicken breast, roasted, 3 oz | 72 mg | 17% |
Cod, cooked, 3 oz | 71 mg | 17% |
Red potato, baked, 1 large | 57 mg | 13% |
Kidney beans, canned, ½ cup | 45 mg | 11% |
Quinoa, cooked, 1 cup | 43 mg | 10% |
Milk, 1% fat, 1 cup | 43 mg | 10% |
Brussels sprouts, boiled, ½ cup | 32 mg | 8% |
Broccoli, boiled, ½ cup | 31 mg | 7% |
The percentages are our arithmetic against the women's AI. Three things stand out. Liver is in a class of its own, and almost nobody eats it weekly. Below liver, the egg is the only everyday food that delivers more than 100 milligrams in a single ordinary portion. The plant foods are real contributors, but they arrive in 30-to-50-milligram steps, so a plant-built plate needs several in the same day.
Why the egg carries the argument
It is the yolk. Zeisel and da Costa are specific: "Egg yolks are the most concentrated source of choline in the American diet, providing 680 milligrams per 100 grams." Harvard's list of food sources names "egg yolks," not eggs. The NIH's 147-milligram figure is for a whole egg, yolk included; the egg-white omelet, the order that felt virtuous for twenty years, leaves the choline in the kitchen.
The population data say the same thing from the other direction. In 2017, Taylor Wallace and Victor Fulgoni published an analysis in Nutrients of 24,774 Americans in the national NHANES surveys from 2009 to 2014. Their headline: "Only 8.03 ± 0.56% of adults ... meet the AI for choline." Then they split adults by whether eggs were on the menu: egg consumers had a usual intake of 525 milligrams a day, non-consumers 294. In their words, "consumers of eggs had almost double the usual intake of choline as compared to non-consumers," and 57.3 percent of egg eaters met the AI against 2.43 percent of everyone else. Meat, poultry and seafood helped, but less: eating them raised intake from 235 to 345 milligrams and "did not result in substantial increases in the percent of individuals meeting the AI." Their conclusion is blunt — it is "extremely difficult to achieve the AI for choline without consuming eggs" or taking a supplement — and in their modeling, "substitution of 2 eggs per day for red and/or processed meat" was what let a 2,000-calorie pattern reach the target.
One disclosure belongs next to that study: the lead author reports being "an academic consultant for the Egg Nutrition Center." It does not change the public NHANES arithmetic, but it is worth knowing who framed the question. The NIH's own numbers point the same way: "Most people in the United States consume less than the AI for choline," with average intake from food at 402 milligrams in men and 278 in women. The gap is real whoever is counting it.
Building a day that reaches the number
Here is what the NIH figures add up to on an ordinary plate. The arithmetic is ours; the serving values are theirs.
A one-egg day. One hard-boiled egg at breakfast (147 mg), three ounces of roasted chicken breast at lunch (72), a baked red potato with dinner (57) and a cup of 1 percent milk (43) comes to 319 milligrams. That is a reasonable, protein-forward day, and it lands below both targets — close to the 294-milligram average Wallace and Fulgoni found in adults who skip eggs.
A two-egg day. Add a second egg and the same plate reaches 466 milligrams — over the women's AI of 425, still under the men's 550. This is the shape of the authors' two-eggs-a-day modeling.
A two-egg day for men. Add a half cup of roasted soybeans and the total is 573 milligrams, above the men's AI.
A plant-built day. Soybeans (107), a baked potato (57), a half cup of kidney beans (45), a cup of quinoa (43), and a half cup each of broccoli (31) and Brussels sprouts (32) is 315 milligrams — a lot of eating to land where the one-egg day did. It can be done, but it has to be planned.
So: are eggs enough? One is a third of a woman's target and a quarter of a man's. Two, with a few of the foods above, is enough for most women and close for most men — the egg is simply the one everyday food dense enough to do in one portion what plant foods do in six.
What the food numbers cannot tell you
Three honest limits. First, falling short of the AI is not the same as a deficiency. The NIH is careful here: "frank choline deficiency in healthy men and nonpregnant women is very rare." Most people below the line are not unwell; they are below a line set to protect the liver, with a wide margin.
Second, the requirement varies. In the depletion studies, most men and postmenopausal women showed signs of trouble on a choline-free diet; fewer than half of premenopausal women did. Your number may be lower or higher than the table, and no standard blood panel will tell you which. Anyone with a medical condition, or who is pregnant or nursing, should get choline guidance from their doctor, not a food table.
Third, there is a ceiling. The NIH's Tolerable Upper Intake Level for adults is 3,500 milligrams a day — roughly 24 eggs, by our arithmetic — and Harvard notes that very high intakes can bring "excessive sweating, fishy body odor, or nausea/vomiting." Food alone will not get you there; stacking several choline supplements could.
Where Great Billiom Citicoline fits
Everything above is about choline from food, and food is where it should come from first. Citicoline belongs in the same conversation because of what it is: cytidine diphosphate-choline, or CDP choline, a compound the body splits into cytidine and choline — one of the supplement forms the NIH's definition of choline covers. Our guide to supplements for memory and focus walks through the randomized citicoline trials in healthy adults, and our comparison of citicoline vs alpha-GPC explains how the two supplement forms differ.
One fact keeps the comparison with eggs honest. A citicoline label counts the whole molecule, and by the published formulas choline is roughly a fifth of citicoline's weight, the rest being the cytidine and phosphate part. So a 1,000-milligram serving of citicoline is a choline source, not a 1,000-milligram choline dose — which is why we describe Great Billiom Citicoline as a choline source alongside the food on your plate, not a replacement for it, and not a reason to skip the eggs.
What we can tell you is what is in the bottle. Great Billiom Citicoline CDP Choline provides 500 mg of citicoline per capsule and 1,000 mg per two-capsule serving, and it supports memory, focus and mental clarity with clean mental energy without caffeine or sugar. The label directions are two capsules daily with 8 to 12 ounces of water, preferably in the morning, which puts it beside breakfast — the meal where the egg usually is. A bottle holds 90 capsules, a 45-day supply, for $19.99, or $17.99 on Subscribe & Save. The NIH's upper limit of 3,500 milligrams applies to choline from every source combined, so anyone already taking another choline supplement, taking prescription medication, pregnant or nursing, or managing a medical condition should talk to their doctor before adding it. And if the reason you are reading is the energy dip after lunch, our article on the afternoon slump separates what the body clock, the meal and your sleep each contribute.
Key takeaways
The adult Adequate Intake for choline is 550 mg a day for men and 425 mg for women; it was set to protect the liver, not to produce a mental effect, and it is an AI rather than an RDA because the data were thin (NIH).
Most Americans fall short: average intake from food is 402 mg in men and 278 mg in women (NIH), and only about 8 percent of adults met the AI in the 2009–2014 NHANES analysis (Wallace & Fulgoni 2017).
The egg is the one everyday food that delivers more than 100 mg in a single portion (147 mg), because the choline is in the yolk; egg eaters averaged 525 mg a day against 294 mg for non-eaters.
Two eggs plus a few of the other choline foods reaches the women's AI and comes close to the men's; a plant-built plate can get there but needs several servings planned in the same day.
Falling short of the AI is not a deficiency, requirements vary between people, and the upper limit of 3,500 mg applies to choline from every source combined.
Two eggs, a serving of protein and a plate that includes beans, potatoes or soybeans: that is what the food tables support, and it is where choline should come from first. If you also want a daily choline source that supports focus and mental clarity without caffeine, Great Billiom Citicoline CDP Choline gives you 1,000 mg of citicoline per two-capsule serving, taken in the morning, for $19.99.
Frequently asked questions
What foods are highest in choline?
By NIH serving values, beef liver leads at 356 mg per 3 ounces, then one large egg at 147 mg, braised beef top round at 117 mg and roasted soybeans at 107 mg per half cup. Chicken breast and cod give about 70 mg; potatoes, kidney beans, quinoa and milk 43 to 57 mg; broccoli and Brussels sprouts about 30 mg.
How many eggs a day to get enough choline?
One large egg gives 147 mg, about a third of the women's 425 mg Adequate Intake and a quarter of the men's 550 mg. In the NHANES analysis, two eggs a day in place of red or processed meat let a 2,000-calorie pattern reach the AI. Two eggs plus the other choline foods is the realistic answer.
Is the choline in the egg white or the yolk?
The yolk. Zeisel and da Costa call egg yolks "the most concentrated source of choline in the American diet," at 680 mg per 100 grams, and Harvard's Nutrition Source lists egg yolks, not whites, among food sources. The NIH's 147 mg figure is for a whole egg. An egg-white omelet keeps the protein and leaves the choline behind.
Can you get enough choline on a plant-based diet?
It takes planning. The richest plant source in the NIH table is roasted soybeans at 107 mg per half cup; potatoes, kidney beans, quinoa, broccoli and Brussels sprouts add 30 to 57 mg each. Six such servings reach about 315 mg, below both U.S. targets and short of EFSA's 400 mg. A supplement is the other route.
Is citicoline the same as choline?
No. Citicoline, also called CDP choline, is a larger molecule the body splits into cytidine and choline, so it is a choline source rather than choline itself. By the published formulas, choline is roughly a fifth of citicoline's weight, so 1,000 mg of citicoline is not 1,000 mg of choline. Great Billiom Citicoline provides 1,000 mg of citicoline per serving.
Megan Elliott, Content Editor at Great Billiom. Every claim in this article is sourced from the primary research linked above. Read our editorial standards → thegreatbilliom.com/editorial-standards
Sources
NIH Office of Dietary Supplements. "Choline: Fact Sheet for Health Professionals." Updated June 2, 2022.
Wallace TC, Fulgoni VL. "Usual Choline Intakes Are Associated with Egg and Protein Food Consumption in the United States." Nutrients, 2017;9(8):839. doi:10.3390/nu9080839
Zeisel SH, da Costa K-A. "Choline: An Essential Nutrient for Public Health." Nutrition Reviews, 2009;67(11):615–623. doi:10.1111/j.1753-4887.2009.00246.x
Harvard T.H. Chan School of Public Health, The Nutrition Source. "Choline." Last reviewed March 2023.
EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA). "Dietary Reference Values for choline." EFSA Journal, 2016, publication 4484.
PubChem (National Library of Medicine). Citicoline, CID 13804 and Choline, CID 305 — molecular formulas; the weight share is our arithmetic from those formulas.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary.
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