Vitamin C: History and Discovery

In the winter of 1927, a young Hungarian researcher named Albert Szent-Györgyi, working in Cambridge, purified a strange reducing substance from the adrenal glands of cattle and from orange juice and cabbage. He could not say what it did, so he half-jokingly proposed calling it "ignose" and then "godnose" (as in "God knows"); the journal editor refused, and it was published in 1928 as "hexuronic acid." Four years later that same molecule turned out to be the long-hunted substance that prevents scurvy — the bleeding, exhausting, often fatal disease that had killed more sailors than storms and battles combined. This is the story of how scurvy was first beaten with citrus fruit centuries before anyone understood why, how guinea pigs handed scientists the tool they needed, and how a tense race across two continents ended with two Nobel Prizes in a single year. Where the record is firm we say so; where priority was genuinely disputed, we mark it as a dispute rather than pick a winner.

Table of Contents

  1. Scurvy: The Disease That Drove the Discovery
  2. James Lind and the Citrus Experiment (1747)
  3. Casimir Funk and the Word "Vitamine" (1912)
  4. The Guinea Pig: Holst and Frölich (1907)
  5. Szent-Györgyi and "Hexuronic Acid" (1928)
  6. A Race and a Dispute: King, Svirbely and the Naming of Vitamin C (1932)
  7. Structure and Synthesis: Haworth and Reichstein (1933)
  8. Two Nobel Prizes in One Year (1937)
  9. Legacy: From Lemon Juice to Pauling and Beyond
  10. Research Papers and References
  11. Connections
  12. Featured Videos

Scurvy: The Disease That Drove the Discovery

The history of vitamin C begins not with the vitamin but with the disease its absence causes. Scurvy — the word itself gives the vitamin its chemical name, ascorbic acid, from a Latin phrase meaning roughly "no scurvy" — is what happens to the human body when it runs out of vitamin C. Because the vitamin is needed to build and hold together collagen, the protein that knits skin, blood vessels, gums, and bone, a person deprived of it slowly comes apart: gums swell and bleed, old wounds and even old scars reopen, the skin bruises and bleeds under the slightest pressure, teeth loosen, joints ache, and exhaustion sets in. Left untreated, scurvy kills.

For most of recorded history scurvy was a fact of life on long voyages and during sieges, winters, and famines — any stretch when fresh fruit and vegetables disappeared from the diet. The disease became infamous in the age of long-distance sea travel. On voyages lasting months, with crews living on salt meat and hard biscuit, scurvy could kill the majority of a ship's company. By many historical estimates it claimed more sailors' lives between the sixteenth and eighteenth centuries than shipwreck and enemy action put together — a toll large enough that conquering scurvy became a serious strategic concern for the great naval powers.

It is worth being clear about what people understood at the time, which was very little. Folk knowledge, ship's surgeons, and a scattering of physicians had long noticed that fresh greens, certain fruits, and citrus seemed to help, but the cause was a mystery and the "cures" competed with dozens of useless remedies. Nobody knew that a single missing nutrient was responsible. That a specific dietary deficiency — rather than bad air, spoiled food, or an imbalance of bodily humours — could cause a disease was itself a revolutionary idea that took centuries to establish. The sections that follow trace how that idea was won.

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James Lind and the Citrus Experiment (1747)

The single most famous episode in scurvy's long history belongs to a Scottish naval surgeon named James Lind (1716–1794). In 1747, serving aboard HMS Salisbury, Lind carried out what is widely remembered as one of the first controlled clinical trials in the history of medicine. He took twelve sailors who were all sick with scurvy and as alike as he could manage, housed them together, fed them the same basic diet, and then split them into six pairs — each pair receiving a different supposed remedy: cider, dilute sulphuric acid ("elixir of vitriol"), vinegar, sea water, a spicy paste plus barley water, or two oranges and a lemon a day.

The result was stark. The pair eating oranges and a lemon recovered so quickly that within about six days one was fit for duty and the other nearly so; the cider group improved slightly; the rest did not improve at all. Lind had, in effect, run a comparison experiment and watched citrus fruit beat every rival treatment. He published his findings in A Treatise of the Scurvy in 1753.

Here honesty about the historical record matters. Lind is often described, loosely, as "the man who discovered the cure for scurvy," but the truth is more tangled and more interesting. He did not discover that citrus helped — that had been observed by others before him — and he did not understand why it worked; like everyone of his era he had no concept of a vitamin. His own theory of scurvy was mistaken, and he later favoured a concentrated boiled-down citrus "rob" that destroyed much of the very vitamin that made the fruit effective. It also took the Royal Navy roughly four decades after his trial to issue citrus juice routinely. Lind's enduring importance is not as the discoverer of vitamin C — the vitamin would not be identified for another 185 years — but as an early and influential demonstration that you could test remedies against one another and let the comparison decide. He moved scurvy one decisive step from folklore toward science.

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Casimir Funk and the Word "Vitamine" (1912)

For more than a century after Lind, scurvy sat in a strange limbo: a disease everyone agreed could be prevented by the right food, but with no agreed explanation. The conceptual breakthrough that eventually made vitamin C thinkable came from research on a different deficiency disease, beriberi, and from a Polish-born biochemist named Casimir Funk (1884–1967).

Working in London in 1912, Funk proposed that several then-mysterious diseases — including beriberi, scurvy, rickets, and pellagra — were each caused by the lack of a specific trace substance in the diet. Building on Christiaan Eijkman's observation that something in the outer layers of rice protected against beriberi, Funk isolated an active fraction, found it contained an amine (a nitrogen-containing chemical group), and coined the word "vitamine" — from Latin vita, "life," plus "amine." The term meant, in effect, "an amine necessary for life."

There is a small, honest correction built into the word itself. As more of these substances were identified, chemists realised that most of them are not amines at all — vitamin C, for one, contains no nitrogen and is not an amine. In the 1920s the final "e" was quietly dropped and "vitamine" became "vitamin," the spelling we use today. Funk's great contribution was not the chemistry, which was partly wrong, but the powerful unifying idea: that certain diseases are deficiency diseases, each curable by supplying one missing dietary factor. That idea is the conceptual key that turned the centuries-old puzzle of scurvy into a solvable scientific problem — find the missing factor, and you have found the cause and the cure at once.

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The Guinea Pig: Holst and Frölich (1907)

Before anyone could isolate the anti-scurvy factor, they needed a way to test for it — an animal that, like humans, gets scurvy when deprived of vitamin C. Most laboratory animals do not, because most mammals make their own vitamin C and can never run short. The animal that unlocked the whole field was supplied, almost by luck, by two Norwegian scientists.

In 1907, the Oslo professor of hygiene Axel Holst (1860–1931) and the paediatrician Theodor Frölich (1870–1947) were investigating "ship beriberi," a disease of sailing crews that strongly resembled scurvy. To study it they fed guinea pigs a restricted grain-based diet — and the animals developed unmistakable scurvy-like signs, which were prevented when fresh cabbage or lemon juice was added back. Their paper, published that year in The Journal of Hygiene, is now regarded as one of the single most important contributions to understanding the cause of scurvy.

The choice of guinea pig was a genuine stroke of fortune, and the scientists themselves did not know how lucky they were. The guinea pig is one of the handful of mammals — alongside humans, other primates, and a few others — that cannot synthesise vitamin C and therefore can actually develop scurvy. Had Holst and Frölich used the pigeons traditionally favoured in beriberi research, they would have failed, because pigeons make their own vitamin C. Their guinea pig model became the essential biological assay for the next quarter-century: a reliable living test that let later chemists check whether a given extract or purified substance truly cured scurvy. Without that test, the isolation race of the early 1930s described below could not have been settled.

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Szent-Györgyi and "Hexuronic Acid" (1928)

The central figure in the discovery of vitamin C is the Hungarian physiologist Albert Szent-Györgyi (1893–1986). His path to the vitamin came sideways, through a question about why some plant tissues turn brown when cut while others do not — a question about biological oxidation, not nutrition. He noticed that a reducing substance present in certain plants, and abundantly in the adrenal glands of animals, could delay this browning by donating electrons.

At the invitation of the eminent biochemist Sir Frederick Gowland Hopkins, Szent-Györgyi worked at Cambridge, where in 1927 he succeeded in purifying this reducing agent from cattle adrenal glands, from orange juice, and from cabbage. He determined its chemical formula as C₆H₈O₆ and recognised it as a sugar-like acid. Because of its six carbons and acidic character he proposed naming it a "hexuronic acid" — but only after the Biochemical Journal editor rejected his playful suggestions of "ignose" and "godnose," jokes aimed at the fact that he did not yet know the molecule's function. The work appeared in 1928 as "Observations on the function of peroxidase systems and the chemistry of the adrenal cortex."

At this stage Szent-Györgyi had isolated the molecule but had not identified it as the anti-scurvy vitamin; that connection was still to come, and it would arrive in the middle of a priority dispute. What he had done was capture, in pure crystalline form, the substance the whole field had been hunting without knowing it. A practical problem nearly stalled everything: adrenal glands and citrus yielded only tiny amounts. Szent-Györgyi solved it after returning to Hungary by turning to paprika (Hungarian red pepper), an enormously rich and cheap source from which, between roughly 1930 and 1936, he and his colleagues could extract hexuronic acid in quantities measured in grams and even kilograms — enough, at last, to do decisive chemistry and biology with it.

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A Race and a Dispute: King, Svirbely and the Naming of Vitamin C (1932)

The proof that hexuronic acid was vitamin C, and the credit for it, became the subject of a genuine and lasting priority dispute — one this page reports as a dispute rather than resolving. Two laboratories converged on the same answer within weeks of each other in the spring of 1932.

In Pittsburgh, the American biochemist Charles Glen King (1896–1988) had been working on the anti-scurvy factor for years, concentrating it from lemon juice and testing it in the Holst–Frölich guinea pig assay. On 22 April 1932, King and his co-worker W. A. Waugh published in the journal Science that they had isolated crystalline vitamin C from lemon juice and that it appeared identical to hexuronic acid.

In Szeged, Hungary, Szent-Györgyi was working with a young American on his team, Joseph Svirbely (1906–1994) — who, by a twist of fate, had previously worked in King's Pittsburgh laboratory. Using guinea pigs, Svirbely and Szent-Györgyi showed that animals fed hexuronic acid were protected from scurvy while controls were not, proving the molecule was the vitamin. Their report reached the journal Nature roughly two weeks after King's Science note, and their fuller paper, "The chemical nature of vitamin C," appeared in the Biochemical Journal that same year.

What followed was, in the words of later historians, a bitter controversy. The timing was extraordinarily close, the two groups had a personal connection through Svirbely, and each side and its supporters felt the other had been given too much credit. The careful and widely accepted reading today is that both King and Szent-Györgyi have legitimate claims: King's group published the crystalline isolation from lemon juice first, while Szent-Györgyi had isolated the pure substance years earlier (in 1928) and, with Svirbely, supplied the biological proof of identity — and it was Szent-Györgyi who possessed the molecule in bulk. The Nobel Committee would credit Szent-Györgyi (see below), but the question of whether the two men deserve equal recognition has never been fully settled, and we do not settle it here.

One lasting product of this period was the name. The clumsy "hexuronic acid" was replaced, on the joint proposal of Szent-Györgyi and the chemist Norman Haworth, with "a-scorbic acid" — literally "the acid that prevents scurvy" — giving us the name ascorbic acid still used for vitamin C today.

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Structure and Synthesis: Haworth and Reichstein (1933)

Isolating and naming the vitamin was not the end of the story. Two further questions remained: what is its exact molecular structure, and can it be manufactured rather than squeezed out of fruit and peppers? Both were answered in a remarkable burst of work in 1933.

The structure was solved in England by the carbohydrate chemist Sir Norman Haworth (1883–1950), working at the University of Birmingham with his colleague Edmund Hirst. Crucially, Haworth had a supply of pure vitamin C to work with because Szent-Györgyi generously shared the material he was extracting from paprika. Haworth and Hirst worked out the molecule's correct structure and then achieved its laboratory synthesis — making this the first vitamin ever to be both structurally defined and artificially produced. That mattered enormously: a synthesised vitamin can be made cheaply and at scale, putting it within reach of ordinary people rather than depending on rare botanical sources.

At almost exactly the same moment, the Polish-Swiss chemist Tadeus Reichstein (1897–1996), working at the ETH in Zürich with his student Andreas Grüssner, independently devised a route to synthesise ascorbic acid from ordinary glucose. Reichstein's method — a clever combination of a microbial fermentation step with chemical reactions, now known as the Reichstein process — proved ideal for industry. It was licensed to the pharmaceutical company Hoffmann–La Roche, which in 1934 began the world's first mass production of synthetic vitamin C, sold under the brand name Redoxon. Variants of the Reichstein process underpinned vitamin C manufacture for decades and still inform industrial production today.

Because two groups published syntheses essentially simultaneously, credit here is appropriately shared rather than assigned to one person: Haworth and Hirst are credited with determining the structure and accomplishing the first synthesis of the vitamin, while Reichstein and Grüssner devised the synthetic route that made cheap industrial production possible. Together their work transformed vitamin C from a scarce laboratory curiosity into one of the most widely produced compounds on Earth.

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Two Nobel Prizes in One Year (1937)

The discovery of vitamin C was recognised at the very highest level in 1937, when two separate Nobel Prizes — one in medicine, one in chemistry — went to work bound up with this single vitamin.

The 1937 Nobel Prize in Physiology or Medicine was awarded to Albert Szent-Györgyi, in the official words of the prize, "for his discoveries in connection with the biological combustion processes, with special reference to vitamin C and the catalysis of fumaric acid." The citation is worth reading closely: it honours Szent-Györgyi's broader work on how cells burn fuel for energy, with vitamin C named explicitly as a centrepiece. It is on the strength of this prize that he is most often called "the man who discovered vitamin C" — a description that is fair, provided one remembers Charles Glen King's parallel claim discussed above.

The 1937 Nobel Prize in Chemistry went to Sir Norman Haworth "for his investigations on carbohydrates and vitamin C," an award he shared with the Swiss chemist Paul Karrer, who was recognised for his work on other vitamins (including vitamin A and B2). Haworth's half of the prize specifically reflects his determination of the structure of vitamin C and its synthesis. Notably, Tadeus Reichstein — whose synthesis route became the industrial standard — did not share this prize, though he would win his own Nobel Prize in Physiology or Medicine years later, in 1950, for entirely different work on the adrenal hormones.

Two Nobel Prizes in the same year, touching the same humble molecule from two different scientific directions, is a fitting measure of how large the discovery of vitamin C loomed in the science of its time — the convergence of nutrition, physiology, and organic chemistry on a substance that had quietly governed human survival for all of history.

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Legacy: From Lemon Juice to Pauling and Beyond

Within a few years of its isolation, vitamin C went from an unknown to a cheap, synthesised, mass-produced supplement — one of the fastest journeys from laboratory discovery to everyday medicine cabinet in the history of nutrition. The deficiency disease that had terrorised sailors for centuries became, in principle, trivially preventable.

The vitamin's later history is dominated by one outsized and controversial figure: the American chemist Linus Pauling (1901–1994), himself a double Nobel laureate (Chemistry 1954, Peace 1962). From the 1970s onward, Pauling argued energetically that very large doses of vitamin C — far above the amount needed to prevent scurvy — could prevent the common cold and benefit serious illness, including cancer. His advocacy made vitamin C a household name and drove enormous public interest, but his strongest claims, particularly about megadoses and the common cold and cancer, were not borne out by the controlled trials that followed and remain widely disputed within mainstream medicine. We mention Pauling here as a major and genuine part of vitamin C's cultural history, not as an endorsement of high-dose claims; the current evidence is weighed on the companion Vitamin C Benefits pages.

A final thread of the discovery story is biological rather than historical, and it explains why humans needed this whole drama in the first place. Most mammals manufacture their own vitamin C in the liver and can never get scurvy. Humans — along with other primates, guinea pigs, and a scattering of other species — carry a broken copy of the gene (called GULO) for the final enzyme in that pathway; the working gene was lost in our distant evolutionary past. That single inherited defect is the reason we, almost uniquely among animals, must obtain vitamin C from food, the reason scurvy was possible at all, and the reason Holst and Frölich's guinea pigs could stand in for us in the laboratory. The full account of vitamin C's many roles in the body, its food sources, and its evidence-based uses continues on the main Vitamin C page; this article has told only the story of how it was found.

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Research Papers and References

The list below combines key peer-reviewed and historical sources on the discovery of vitamin C with curated PubMed topic-search links into the history-of-medicine literature. Author names, titles, and journals are given as plain text; only the stable DOI, PMID, PMCID, or archive link is hyperlinked, and each opens in a new tab. James Lind's 1753 Treatise of the Scurvy and Casimir Funk's 1912 coining of "vitamine" are described in the article as historical primary sources.

  1. Carpenter KJ. The discovery of vitamin C. Annals of Nutrition and Metabolism. 2012;61(3):259-264. — doi:10.1159/000343121 · PMID: 23183299
  2. Holst A, Frölich T. Experimental studies relating to ship-beri-beri and scurvy. II. On the etiology of scurvy. The Journal of Hygiene. 1907;7(5):634-671. (Nutrition classics reprint, Nutrition Reviews 1974;32(9):273-275.) — PMID: 4606855
  3. Szent-Györgyi A. Observations on the function of peroxidase systems and the chemistry of the adrenal cortex. Description of a new carbohydrate derivative. Biochemical Journal. 1928;22(6):1387-1409. — doi:10.1042/bj0221387 · PMCID: PMC1252273
  4. Svirbely JL, Szent-Györgyi A. The chemical nature of vitamin C. Biochemical Journal. 1932;26(3):865-870. — doi:10.1042/bj0260865 · PMID: 16744896
  5. Haworth WN, Hirst EL. Synthesis of ascorbic acid. Journal of the Society of Chemical Industry. 1933;52(31):645-646. — doi:10.1002/jctb.5000523107
  6. The Nobel Prize in Physiology or Medicine 1937 — Albert Szent-Györgyi. — NobelPrize.org: Medicine 1937
  7. The Nobel Prize in Chemistry 1937 — Norman Haworth and Paul Karrer. — NobelPrize.org: Chemistry 1937
  8. History of scurvy and the discovery of vitamin C — PubMed: scurvy history and the discovery of vitamin C
  9. James Lind, scurvy, and the early history of the clinical trial — PubMed: James Lind, scurvy, and the clinical trial

External Authoritative Resources

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Connections

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