For most of the twentieth century the stress-and-acid model was wrong: peptic ulcers were not a verdict on the patient’s worry, ambition or diet but, in roughly 90% of duodenal and up to 80% of gastric cases, a curable infection with Helicobacter pylori. From the Croatian-Austrian surgeon Dragutin (Carl) Schwarz’s 1910 dictum Ohne sauren Magensaft kein peptisches Geschwür — “no acid, no ulcer” — physicians taught that an ulcer reflected too much stress and spice. The promise was a coherent story; the delivered reality was some seventy years of treatments that suppressed acid and managed symptoms while never touching the cause.
The reversal began in Perth, Western Australia. In 1979 pathologist J. Robin Warren saw small curved bacteria colonising the lower stomach of biopsy patients, always alongside inflammation — against the textbook certainty that gastric acid sterilised the stomach. With clinician Barry Marshall, Warren cultured the organism in 1982 (a chance success after an Easter-weekend plate was left incubating past the usual 48 hours), and the pair published in The Lancet in 1983 and 1984. The establishment did not believe them, so in late July 1984 Marshall drank a broth of the bacterium, developed acute gastritis within days, documented it by endoscopy, and cured it with antibiotics — satisfying Koch’s postulates on his own stomach lining.
Displacement was total but slow. A US NIH Consensus panel (12–14 Feb 1994) accepted that H. pylori caused most peptic ulcers and that a short antibiotic course could cure a disease previously managed for life. On 3 October 2005 the Nobel Assembly awarded Warren and Marshall the Prize in Physiology or Medicine “for their discovery of the bacterium Helicobacter pylori and its role in gastritis and peptic ulcer disease” — the formal certificate of a dogma revoked.
This dossier files the stress-and-acid model as TH-002 not as fraud — it was sincere, taught in good faith — but as the family’s purest specimen of an honest, near-universal theory displaced by a confirmed mechanism: institutional confidence, not dishonesty, was the obstacle, and the cost was measured in years of curable suffering prolonged.
The focal infection theory was launched into the medical mainstream by British surgeon William Hunter, whose 1900 papers on “oral sepsis” and his incendiary 1910 lecture at McGill University in Montreal told physicians that the worst cases of anaemia, gastritis, colitis, “obscure fevers and nervous disturbances” owed their origin to septic foci hidden in the mouth — and it was popularized in America by Chicago physician Frank Billings, who renamed it “focal infection” in 1911-12. The promise was a unifying key to chronic disease and even insanity; the reality was that removing the supposed foci cured nothing, and the search for them maimed and killed. The gap between the elegant hypothesis and the operating-table arithmetic would, over four decades, cost an unknowable number of teeth measured in the millions and, at one New Jersey asylum, the lives of more than three in ten patients sent to surgery.
The theory’s most lethal apostle was Henry Cotton, medical director of the New Jersey State Hospital at Trenton from 1907 to 1930. Convinced that insanity was at bottom a toxic disorder seeded by occult infection, Cotton pulled teeth wholesale, then escalated to tonsils, sinuses, cervixes, ovaries, testicles, gall bladders, spleens, stomachs, and — most fatally — sections of colon. He publicly claimed cure rates of 85-87%. He also conceded, in print, mortality “as high as 30%” on his abdominal cases; Andrew Scull’s archival reconstruction in Madhouse (2005) put the colectomy death rate above 30% and the true overall surgical mortality nearer 45%. Cotton’s answer to those deaths was that the insane simply possessed “a much lower vitality.”
The reversal did not arrive as a single ban but as the slow accumulation of negative evidence the theory could not survive. A 1924-25 investigation commissioned from psychiatrist Phyllis Greenacre by Cotton’s own mentor, Adolf Meyer of Johns Hopkins, found his record-keeping “chaotic,” his data internally contradictory, and his cures unsupported — yet Meyer suppressed the report and Cotton operated on. The decisive blows were epidemiological: Russell Cecil and D. Murray Angevine’s 1938 analysis of 200 rheumatoid-arthritis cases in the Annals of Internal Medicine found “no consistent cures by tonsillectomies or tooth extractions,” and Hobart Reimann and W. Paul Havens’s 1940 review concluded tooth removal “must still be regarded as an experimental procedure not devoid of hazard.”
This dossier files “Overturned” entry TH-010 because the revoked object is the idea itself — a causal theory of disease, not a single recalled device — and because its revocation is the cleanest specimen of a plausible mechanism, never tested before it was applied, that controlled study quietly demolished only after it had already emptied tens of thousands of mouths and filled a hospital cemetery.
In 1928, the agronomist Trofim Denisovich Lysenko announced from an experimental station in Azerbaijan that chilling winter-wheat seed could make it behave as spring wheat — a technique he called “vernalization” — and from that single, never-replicated claim built a doctrine that an organism’s heredity could be reshaped by its environment and the change passed to its offspring. The promise was a Marxist biology that could remake nature on command and feed a famine-prone empire in a few seasons; the reality was a theory that contradicted the entire experimental record of genetics and produced no durable gain in any crop. The gap between promise and harm was measured not in one trial but across three decades, two countries, and a toll that includes geneticists shot or starved for dissenting and, more diffusely, millions dead in famines that scientific agriculture might have softened.
Lysenkoism was not debunked by a tribunal in the ordinary sense — no retraction notice, no struck-off register. It was a theory the Soviet state had elevated to law and then, after Stalin’s death and Khrushchev’s fall, quietly took back. At the session of the Lenin All-Union Academy of Agricultural Sciences (VASKhNIL), 31 July–7 August 1948, Lysenko — keynote edited in Stalin’s own hand — declared Mendelian genetics a bourgeois fiction and “the science of Michurin” the only correct theory; teaching chromosomal heredity became punishable. The reversal, when it came in 1964–65, was the mirror image: physicist Andrei Sakharov denounced Lysenko before the Academy of Sciences General Assembly in 1964, and in February 1965 the Academy removed him and convened a commission that audited the inflated results of his Lenin Hills experimental farm in Moscow.
The human cost ran ahead of the doctrine and outlasted it. Nikolai Vavilov — the world’s foremost plant geneticist, builder of the largest seed bank on earth — was arrested by the NKVD in August 1940 and died of starvation in a Saratov prison on 26 January 1943, his life’s work used as evidence of “wrecking.” More than 3,000 biologists were dismissed, imprisoned, or executed. Exported to Mao’s China from 1949, the doctrine helped underwrite the agronomic catastrophe of the Great Leap Forward. The mechanism Lysenko sold — soft inheritance of acquired characters — was not merely unproven but contradicted by every controlled experiment, and the 1953 discovery of DNA’s structure left it without a physical basis to stand on.
This dossier files “Overturned” entry TH-011 as the archetype of doctrine debunked by ideological capture: a claim that won not on evidence but on political utility, was protected from falsification by the secret police rather than peer review, and was withdrawn only when the politics that installed it changed.