The Celery Juice Claims: What the Evidence Shows

A great many people arrive at a page about celery because of one thing: the morning glass of celery juice, and the claim that it heals chronic illness. If that is you, you deserve a straight answer rather than either an enthusiastic endorsement or a sneer. Here it is. The specific medical claims made by the celery juice movement — that it repairs “unproductive” stomach acid, that it kills the pathogens behind most chronic disease, that it detoxifies the liver and reverses named illnesses — come from a single author who states plainly that his information was given to him by a spirit, not from research. There are no clinical trials behind them. That is worth knowing before you rearrange your morning around it. What celery juice does contain is genuinely worth knowing too: water, potassium, a real load of dietary nitrate, some vitamin K and folate, the flavones apigenin and luteolin, and — because juicing throws the pulp away — almost none of celery’s fibre. This page separates the two.

Where the Claims Come From
The Specific Claims, One at a Time
“Unproductive Stomach Acid”
Pathogens, Epstein-Barr, and What Is Actually Known
“Detox” and What the Liver and Kidneys Do
What Celery Juice Actually Provides
Juicing Throws Away the Fibre
Why People Genuinely Feel Better on It
The Real Risks
A Better Version of the Same Habit
How to Judge the Next Claim
Key Research Papers
Connections
Featured Videos

Where the Claims Come From

The modern celery juice movement traces to one source: Anthony William, who writes and broadcasts as the “Medical Medium”. Beginning around 2018 his books and social media accounts promoted drinking sixteen ounces of straight celery juice on an empty stomach every morning, and the practice spread rapidly enough to move retail celery prices.

The important fact about the source is not hidden or disputed — he states it himself, in his own books and interviews. His health information, he says, is dictated to him by a voice he calls the Spirit of Compassion. He has no medical, scientific or nutritional training, and he does not present his claims as derived from research. Read on his own terms, the celery juice protocol is not a scientific claim that happens to lack evidence; it is a claim of a different kind altogether, offered as revelation.

People find that either obviously disqualifying or beside the point, and it is worth being fair about why. Someone with a chronic illness that medicine has handled badly — long diagnostic delays, dismissive appointments, treatments that did not work — is not being foolish when they try something a lot of people say helped them. Being failed by a system is a reasonable thing to respond to. The problem is not the person trying it; it is that the claims themselves, when examined, do not describe how the body works, and following them can mean spending money and hope on the wrong thing.

So the rest of this page does the examination rather than the arguing.

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The Specific Claims, One at a Time

The protocol comes with a defined set of claims. In summary form, celery juice is said to:

contain undiscovered mineral salts — described as “cluster salts” — that are not known to chemistry;
restore or strengthen hydrochloric acid in a stomach whose acid has become “unproductive”;
destroy or weaken viruses and bacteria, particularly Epstein-Barr virus, held to be the hidden cause of a long list of chronic conditions;
detoxify the liver of heavy metals, pesticides and “viral waste”;
thereby improve or resolve autoimmune thyroid disease, eczema and psoriasis, chronic fatigue, fibromyalgia, migraine, acne, digestive disease and more.

Two things are true of every item on that list. No randomised controlled trial supports any of them. And several of them describe mechanisms that are not merely unproven but inconsistent with well-established physiology, which is a stronger objection than simply lacking data. “Cluster salts” is the clearest example: it is not a recognised class of compound, it has no analytical definition, and no laboratory has reported isolating it from celery or anything else. A named substance that only exists inside one author’s books is not an unstudied discovery; it is an unfalsifiable claim.

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“Unproductive Stomach Acid”

This claim deserves individual attention because it sounds plausible and sits next to something real.

What is real: stomach acid genuinely can be too low. Hypochlorhydria and achlorhydria are recognised conditions, caused by autoimmune atrophic gastritis, long-term proton-pump inhibitor use, Helicobacter pylori infection, gastric surgery, and ageing. Low stomach acid genuinely does impair the absorption of vitamin B12, iron and calcium, and genuinely does raise the risk of small intestinal bacterial overgrowth. This is diagnosable — by gastric pH testing, gastrin levels, parietal cell antibodies and endoscopy — and it is treatable.

What is not real: the idea that stomach acid becomes chemically weak or “unproductive” while still being present, and that a vegetable juice can restore its potency. Gastric acid is hydrochloric acid, secreted by parietal cells. There is one kind. It is either being secreted or it is not, and how much is being secreted is measurable. There is no recognised state in which the acid is present but has lost its power, and no mechanism by which drinking celery juice would strengthen it. If anything, a large volume of a low-acid liquid on an empty stomach transiently dilutes and raises gastric pH rather than lowering it.

If you suspect your stomach acid is low — because you have bloating, early fullness, B12 deficiency, iron deficiency without an obvious cause, or you have been on acid-suppressing medication for years — that is a real question with real tests behind it, and it is worth raising properly. Substituting juice for the investigation is the part that costs you something. See GERD and Gut Health.

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Pathogens, Epstein-Barr, and What Is Actually Known

The pathogen claim has two halves, and being accurate means separating them, because one half is nearly right.

Epstein-Barr virus is a real and important virus. More than ninety percent of adults worldwide carry it for life after infection. It causes glandular fever, it is causally linked to several cancers including Burkitt lymphoma and nasopharyngeal carcinoma, and — in a major 2022 study in Science by Kjetil Bjornevik and colleagues, using two decades of stored serum samples from more than ten million US military personnel — it emerged as very likely a necessary cause of multiple sclerosis. Serious researchers do think a common latent virus can be behind a chronic disease. That idea is not fringe.

What does not follow. The claim in the celery juice literature is far broader: that EBV, plus heavy metals, drives the great majority of chronic illness — thyroid disease, fibromyalgia, chronic fatigue, and much else — and that celery juice weakens or kills it. Neither part has support. There is no trial showing celery juice affects EBV viral load, EBV reactivation, or any clinical outcome in any EBV-associated disease. There is no plausible mechanism by which a vegetable juice would suppress a herpesvirus that persists inside memory B cells; the antiviral drugs that do act on EBV are specific nucleoside analogues, and even they perform poorly against latent infection. And the attribution of most chronic disease to a single virus is not what the evidence on those diseases shows.

The pattern here is common in health misinformation and worth recognising: take a real and genuinely under-appreciated scientific finding, stretch it to explain everything, and attach a simple product to it. The first step earns credibility that the second and third steps then spend.

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“Detox” and What the Liver and Kidneys Do

“Detox” is the most durable idea in commercial wellness and one of the emptiest. A systematic review by Alice Klein and Hosen Kiat, published in the Journal of Human Nutrition and Dietetics, looked for controlled trials of detox diets for toxin elimination and found essentially nothing usable: a handful of small, poorly designed studies, no reliable evidence that any commercial detox regimen eliminates any specific toxin, and no evidence of sustained benefit.

Your body already runs a continuous, sophisticated detoxification system. The liver converts fat-soluble compounds into water-soluble ones through two coordinated phases of enzymatic processing; the kidneys filter and excrete; the gut, lungs and skin contribute. That system does not stall and does not need starting. Where it can be genuinely overwhelmed — paracetamol overdose, alcoholic liver disease, real heavy-metal poisoning — the treatment is specific antidotes and chelating agents given under medical care, not vegetable juice.

Two things a “detox” regimen does reliably do, and they explain a great deal of the testimony: it displaces alcohol, ultra-processed food and sugar, and it comes with a strong sense of taking control. Both are real and both are worth having. Neither requires the theory.

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What Celery Juice Actually Provides

Setting the claims aside entirely, here is what is genuinely in a large glass of celery juice.

Water — a lot of it. Celery is around ninety-five percent water. A sixteen-ounce glass is close to half a litre of hydration first thing in the morning, which is not nothing for people who habitually start the day dehydrated.
Potassium. Juicing concentrates the potassium of several stalks into one glass. Potassium genuinely lowers blood pressure and helps the kidney handle sodium; the evidence for that is solid. See Potassium.
Dietary nitrate — and this is the most interesting one. Celery is in the top nitrate tier of vegetables, and dietary nitrate is converted via mouth bacteria into nitrite and then nitric oxide, which relaxes blood vessels. A large glass of celery juice is a substantial nitrate dose. Of everything on this page, this is the mechanism with the best claim to producing a measurable physiological effect, and it is explained fully on the Blood Pressure and Dietary Nitrate page. It is also, notably, not a claim the movement makes.
Vitamin K and folate in useful amounts, plus modest vitamin C and vitamin A precursors.
Apigenin and luteolin, celery’s flavones, at real but small concentrations — see Flavones and Phthalides for what that does and does not mean.
Some sodium, because celery is a salt-marsh plant and contains more of it than most vegetables. Irrelevant in ordinary amounts; worth knowing if you are on a strict sodium restriction and drinking large volumes daily.
Almost no fibre, which is the subject of the next section.

That is a decent list. It describes a hydrating, mineral-rich, nitrate-rich vegetable drink — a reasonable thing to enjoy. It does not describe a treatment.

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Juicing Throws Away the Fibre

This is the concrete, unarguable downside, and it is the one thing about celery juice that is clearly worse than eating celery.

A juicer separates liquid from pulp and discards the pulp. The pulp is the fibre. Celery’s fibre is one of its genuinely good features — it is the reason a stalk is filling for almost no calories, and it is food for the bacteria in your colon, which ferment it into short-chain fatty acids that feed the cells of the gut lining.

The evidence for dietary fibre is among the strongest in all of nutrition. A large series of systematic reviews and meta-analyses led by Andrew Reynolds and published in The Lancet in 2019 found that higher fibre intake was associated with substantially lower all-cause mortality, coronary heart disease, stroke, type 2 diabetes and colorectal cancer, with a clear dose-response relationship. Most people eat well under the recommended amount. Removing fibre from a vegetable and drinking the rest is moving in the wrong direction.

The fix is trivial: blend instead of juicing. A blender keeps everything the juicer keeps and adds back the fibre. It is thicker and less elegant, and it is nutritionally better in every respect.

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Why People Genuinely Feel Better on It

The testimony is real. Large numbers of people report feeling better after starting celery juice, and dismissing that as imaginary is both rude and inaccurate. Several ordinary explanations account for it, and they are worth knowing because they point at what to keep.

Hydration. Half a litre of fluid on waking corrects mild dehydration, which genuinely affects headache, concentration and fatigue.
Displacement. The protocol requires an empty stomach, so the juice replaces whatever the morning used to involve — often a pastry, a sugary coffee, or nothing at all. That change alone can improve how someone feels.
Nitrate and potassium. These are real, measurable effects on blood pressure and vascular function. They do not need the theory to work.
The rest of the protocol. People who take up celery juice usually also cut alcohol, cut ultra-processed food, sleep more and pay attention to what they eat. Attributing the combined result to the juice is the classic confounding problem.
Regression to the mean. Chronic conditions fluctuate. People start new regimens when they feel worst, and what follows a worst point is usually improvement, whatever they did.
Expectation. Placebo effects are largest exactly where celery juice claims its wins — pain, fatigue, mood, bloating, self-rated wellbeing. This is a genuine physiological phenomenon, not a synonym for imaginary.
Ritual and agency. Having something deliberate to do each morning, for your own health, is psychologically real and helps people follow through on other changes.

Notice that almost everything on that list is worth keeping. The habit is fine. It is the explanation that is wrong, and the cost of the wrong explanation is what the next section is about.

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The Real Risks

Celery juice is not dangerous for most people. The risks are specific and mostly indirect.

Delayed diagnosis and treatment. This is by far the biggest one. Attributing symptoms to “viral load” or “unproductive acid” and treating them with juice means not investigating what is actually happening. Autoimmune thyroid disease, coeliac disease, inflammatory bowel disease and many cancers present with exactly the vague fatigue-and-digestion picture the protocol claims to address, and all of them have effective treatments that work better the earlier they start.
Allergy, concentrated. Celery is a recognised cause of anaphylaxis and a mandatory labelled allergen across the European Union. Juicing concentrates several stalks into one glass, which for a sensitised person is a large allergen dose taken on an empty stomach. See Allergy and Photosensitivity.
Furanocoumarins, also concentrated. Celery contains psoralens, which cause a sunlight-triggered skin burn at high enough exposure and which increase in stored or spoiled celery. Reported cases of severe phytophotodermatitis after very large celery intakes exist and are the reason this is worth a line. Occasional juice is not a concern; several stalks daily plus strong sun deserves a thought.
Potassium load in kidney disease. Anyone with advanced kidney disease or on a potassium-restricted diet should treat daily large-volume vegetable juice as something to clear with their renal team rather than assume is harmless.
Blood-thinning medication. Celery carries vitamin K. The issue with warfarin is not celery but inconsistency — suddenly adding or stopping a daily large green juice can shift the INR. Keep intake steady and tell whoever monitors it.
Cost and waste. Sixteen ounces of juice takes roughly a large bunch of celery per day. That is a meaningful weekly grocery cost and a lot of discarded pulp, for a drink you could substantially replicate by eating the vegetable.

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A Better Version of the Same Habit

If the morning ritual works for you, keep it. Here is how to get more out of it.

Blend, do not juice. Celery, a squeeze of lemon, a little water, and whatever else you like. You keep the fibre, the potassium and the nitrate, and it takes the same two minutes.
Add the leaves. They are the most flavone-rich part of the plant and are usually thrown away.
Vary the vegetable. Rocket, beetroot, spinach and chard are all in the same top nitrate tier. Rotating them widens the range of compounds you get and stops the routine becoming a rut.
Do not skip breakfast for it. The empty-stomach requirement comes from the theory, not from physiology. If a drink is displacing actual food, that is a loss, not a gain. Eggs, oats, brown rice porridge, plain yoghurt, fruit and nuts are all better breakfasts than a glass of anything.
Skip the antiseptic mouthwash afterwards. Genuinely: the bacteria on your tongue perform the first step of the nitrate pathway, and antiseptic rinses blunt it.
Keep your investigations going. If you have a chronic illness, keep the appointments, keep the tests, keep the treatment. Adding a vegetable drink to that is fine. Replacing it is the failure mode.

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How to Judge the Next Claim

Celery juice will be replaced by something else, and probably soon. A few questions handle most of these cases, and they take about a minute.

Where did the claim come from? Research, or a single author’s revelation, book or product line? This is not a trick question and the answer is usually stated openly.
Does it name a substance or state that science does not recognise? “Cluster salts”, “unproductive acid”, “viral waste”. A genuinely new discovery is published and then argued about; it does not live only inside the book that sells it.
Does one thing explain too much? A single cause for thyroid disease, fatigue, eczema, migraine and acne is the signature of a story rather than a finding.
Is the evidence testimony? Before-and-after accounts are the weakest form of evidence and the most persuasive form of writing. That mismatch is the whole problem.
What does it want you to stop doing? A claim that adds a vegetable is low-risk. A claim that tells you to stop your medication, skip your appointment or distrust your diagnosis has raised the stakes enormously.
Would the ordinary explanation cover the result? More water, less alcohol, more vegetables, more sleep and a sense of control will produce a lot of testimonials on their own.

Celery has been here before, incidentally. The 1890s had a celery tonic craze built on the same shape of claim, and one of its products — Dr. Brown’s Cel-Ray — is still on the shelf as a soft drink. That story is on the History page, and it is a useful reminder that this is a recurring pattern rather than a modern aberration.

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Key Research Papers

Author names, titles and journals are plain text; only the DOI is a link, and each opens in a new tab. Note what is missing from this list: there are no trials of celery juice for any of the conditions the movement names, because none have been done. The papers below establish what is known about the underlying questions instead.

Klein AV, Kiat H. Detox diets for toxin elimination and weight management: a critical review of the evidence. Journal of Human Nutrition and Dietetics. 2015;28(6):675-686. — doi:10.1111/jhn.12286 — the systematic look at detox regimens, and what it failed to find.
Reynolds A, Mann J, Cummings J, et al. Carbohydrate quality and human health: a series of systematic reviews and meta-analyses. The Lancet. 2019;393(10170):434-445. — doi:10.1016/s0140-6736(18)31809-9 — the fibre evidence that juicing discards.
Bjornevik K, Cortese M, Healy BC, et al. Longitudinal analysis reveals high prevalence of Epstein-Barr virus associated with multiple sclerosis. Science. 2022;375(6578):296-301. — doi:10.1126/science.abj8222 — what a serious EBV-and-chronic-disease finding actually looks like.
Suarez-Lledo V, Alvarez-Galvez J. Prevalence of health misinformation on social media: systematic review. Journal of Medical Internet Research. 2021;23(1):e17187. — doi:10.2196/17187
Illes J, Rodrigues J. The influence of celery (Apium graveolens) juice on hypertension. In: Reference Series in Phytochemistry. 2024:501-523. — doi:10.1007/978-3-031-38663-3_72 — the one celery-juice question that has a real literature behind it.
Liu D, Zhao H, Xu H, Hu J. Effects of celery (Apium graveolens) on blood pressure, glycemic and lipid profile in adults: a systematic review and meta-analysis of randomized controlled trials. Frontiers in Nutrition. 2025;12:1597680. — doi:10.3389/fnut.2025.1597680
Lundberg JO, Weitzberg E, Gladwin MT. The nitrate–nitrite–nitric oxide pathway in physiology and therapeutics. Nature Reviews Drug Discovery. 2008;7(2):156-167. — doi:10.1038/nrd2466 — the mechanism by which celery juice plausibly does something real.
Hord NG, Tang Y, Bryan NS. Food sources of nitrates and nitrites: the physiologic context for potential health benefits. The American Journal of Clinical Nutrition. 2009;90(1):1-10. — doi:10.3945/ajcn.2008.27131
Aburto NJ, Hanson S, Gutierrez H, Hooper L, Elliott P, Cappuccio FP. Effect of increased potassium intake on cardiovascular risk factors and disease: systematic review and meta-analyses. BMJ. 2013;346:f1378. — doi:10.1136/bmj.f1378
Kooti W, Daraei N. A review of the antioxidant activity of celery (Apium graveolens L). Journal of Evidence-Based Complementary & Alternative Medicine. 2017;22(4):1029-1034. — doi:10.1177/2156587217717415
Ballmer-Weber BK, Vieths S, Lüttkopf D, et al. Celery allergy confirmed by double-blind, placebo-controlled food challenge: a clinical study in 32 subjects with a history of adverse reactions to celery root. Journal of Allergy and Clinical Immunology. 2000;106(2):373-378. — doi:10.1067/mai.2000.107196 — why a concentrated celery dose is not trivial for everyone.
Chaudhary SK, Ceska O, Warrington PJ, Ashwood-Smith MJ. Increased furocoumarin content of celery during storage. Journal of Agricultural and Food Chemistry. 1985;33(6):1153-1157. — doi:10.1021/jf00066a032