Peptic Ulcer Disease & H. pylori
It was never stress, and it was never spicy food — it is a bacterium, or it is your painkillers
What it is
Peptic ulcers are breaks in the lining of the stomach or duodenum, and for most of the twentieth century they were confidently attributed to stress and diet. They are not. Two causes account for the overwhelming majority: infection with HELICOBACTER PYLORI, and NSAIDs — ibuprofen, naproxen, aspirin. The discovery that ulcers are largely an infectious disease, curable with antibiotics, won a Nobel Prize, and it remains one of the most complete reversals in modern medicine. H. pylori infects roughly half the world's population, and it is a Group 1 carcinogen: it is the leading cause of gastric cancer.
Why it matters
Because both causes are treatable, and both are routinely missed. H. pylori can be eradicated with a course of antibiotics — and doing so cures the ulcer AND reduces the risk of stomach cancer, which is one of the few genuine cancer-prevention interventions available to an ordinary person. Meanwhile NSAID ulcers are frequently SILENT until they bleed: the drug's painkilling effect masks the pain of the ulcer it is causing, which is why the first sign is sometimes a haemorrhage. And the practical trap that catches more people than any other: THE TEST FOR H. PYLORI IS MADE FALSELY NEGATIVE BY THE VERY DRUG YOU ARE PROBABLY TAKING. Proton pump inhibitors must be stopped for two weeks before testing, and antibiotics for four, or the result cannot be trusted.
What BioSignal knows about treating this
What works for Peptic Ulcer Disease & H. pylori
BioSignal’s clinical summary, most important first.
- TEST FOR H. PYLORI — and stop your PPI two weeks beforehand, or the test will be falsely negative and you will be told you do not have an infection that you do have
- ERADICATE IT if it is present — a course of antibiotics with acid suppression cures the ulcer AND lowers the risk of gastric cancer. That second part makes this one of the very few straightforward cancer-prevention actions available to an individual
- CONFIRM ERADICATION with a repeat test — antibiotic resistance means treatment fails more often than it used to, and assuming success is how a treated ulcer recurs
- REVIEW YOUR NSAIDs — ibuprofen, naproxen and low-dose aspirin cause ulcers, and they can do it silently, because the drug masks the pain of the damage it is causing. If you take them regularly, that deserves a deliberate conversation rather than a repeat prescription
- If an NSAID is genuinely necessary, gastroprotection with a PPI is appropriate — particularly with an anticoagulant, a steroid or an SSRI on board
- Stop smoking; reduce alcohol
- SEEK EMERGENCY CARE for black tarry stool, vomiting blood or 'coffee grounds', or sudden severe abdominal pain — these mean the ulcer is bleeding or has perforated
Signal Records relevant to this condition
Interventions and contributing factors — some of these records describe a cause rather than a cure. The rating shown is BioSignal’s confidence in that Signal Record, not a claim about how well it treats this condition. Open any of them for the full evidence.
- AnticoagulantsHigh confidence
Among the most effective drugs in medicine — roughly a two-thirds reduction in AF stroke. The complexity is not whether they work; it is which one, for whom, and what else you are taking.
- AlcoholHigh confidence
A Group 1 carcinogen with dose-dependent harms. The heart-protection belief does not survive the methods designed to test it. Cutting back helps, even without quitting.
- Curcumin (Turmeric)Limited evidence
Thousands of studies, no approved drug — because curcumin is barely absorbed and a known false positive in lab assays. Modest osteoarthritis relief is its one credible claim.
- Apple Cider VinegarLimited evidence
One modest, real effect on post-meal glucose. No meaningful weight loss. A strong acid with irreversible dental harm — the safety evidence is better established than the efficacy evidence.
New to this? Read these first
How this usually unfolds
- Recognize risk factors
- Get diagnosed
- Track key biomarkers
- Lifestyle first
- Evidence-based treatment
- Long-term monitoring
Who is at risk
- Helicobacter pylori infection — the dominant cause worldwide
- NSAIDs: ibuprofen, naproxen, diclofenac — and low-dose aspirin, which is not a benign exception
- Taking an NSAID together with an anticoagulant, a steroid, or an SSRI — each combination substantially raises bleeding risk
- Smoking
- Older age
- Heavy alcohol use
- NOT stress, and NOT spicy food — both can aggravate symptoms and neither causes the ulcer
How it's diagnosed
Testing for H. pylori is straightforward and is undermined by one thing that almost nobody is warned about: acid-suppressing drugs make the tests negative. The urea breath test and the stool antigen test are both accurate and non-invasive — provided you have stopped proton pump inhibitors for two weeks and antibiotics for four. Endoscopy is indicated where there are alarm features, which are the ones that raise the possibility of gastric cancer: difficulty swallowing, unintentional weight loss, persistent vomiting, iron deficiency anaemia, a palpable mass, or new-onset dyspepsia over the age of about 55.
Key biomarkers
Lifestyle
Explore this condition across BioSignal
Related Foundations
Related Signal Records
Related body systems
Frequently asked questions
Aren't ulcers caused by stress and spicy food?
No — and this is one of the great reversals in modern medicine. For most of the last century ulcers were treated as a psychosomatic disease of the anxious executive, managed with bland diets and rest. Then it was shown that most are caused by a bacterium, Helicobacter pylori, and that antibiotics cure them. The finding was resisted for years and eventually won a Nobel Prize. The other major cause is NSAIDs — ibuprofen, naproxen, aspirin. Stress and spicy food can make an existing ulcer feel worse. Neither creates one.
Why was my H. pylori test negative when I still have symptoms?
Very possibly because of the drug you were taking when you did it — and this catches an enormous number of people. Proton pump inhibitors (omeprazole, lansoprazole and the rest) suppress the bacterium enough to make the breath test and the stool antigen test come back FALSELY NEGATIVE. They must be stopped for TWO WEEKS before testing, and antibiotics for FOUR. If you were tested while taking a PPI — which is exactly what most people with stomach symptoms are taking — a negative result does not mean you are clear. It means the test was not valid. Ask to repeat it properly.
Does H. pylori really cause stomach cancer?
Yes. H. pylori is classified as a Group 1 carcinogen — the same category as tobacco — and it is the leading cause of gastric cancer worldwide. That sounds alarming and the important context is this: the great majority of infected people never develop cancer, and the infection is extremely common. But the practical implication is genuinely good news, and it is under-appreciated: eradicating H. pylori REDUCES gastric cancer risk. It is one of the very few actions an individual can take that directly lowers their risk of a specific cancer, and it takes a course of antibiotics.
Are my painkillers giving me an ulcer?
They might be, and the cruellest part is that you may not feel it. NSAIDs — ibuprofen, naproxen, diclofenac, and low-dose aspirin, which people wrongly think does not count — damage the stomach lining directly. And because they are painkillers, they can MASK the pain of the ulcer they are creating, which is why the first sign is sometimes a bleed rather than a symptom. The risk multiplies if you also take an anticoagulant, a steroid, or an SSRI antidepressant. If you take NSAIDs regularly, that is worth a deliberate review — not a repeat prescription.
Are long-term PPIs dangerous?
The alarm has run well ahead of the evidence, and BioSignal will not join in. Observational studies have linked long-term PPI use to dementia, kidney disease, fractures and more — and these are associations in people who are, by definition, sicker than those not taking them, which is exactly the situation in which confounding produces false signals. Causality is NOT established for the headline harms, and the dementia link in particular has not held up. That said: PPIs are prescribed for years on end to a great many people who were never reviewed, and a drug worth taking is worth having a reason for. The right position is neither fear nor indefinite repeat prescription — it is a periodic review of whether you still need it.
Evidence summary
Peptic ulcer disease is predominantly caused by Helicobacter pylori infection and by NSAID use; the historical attribution to stress and diet is not supported. H. pylori is classified by the IARC as a Group 1 carcinogen and is the principal cause of gastric cancer; eradication cures the majority of associated ulcers and reduces subsequent gastric cancer incidence, an effect demonstrated in randomized and population evidence. Urea breath and stool antigen testing are accurate but are rendered falsely negative by recent proton pump inhibitor (within two weeks) or antibiotic (within four weeks) use — a common and under-recognised source of false reassurance. Eradication should be confirmed by repeat testing, as rising clarithromycin resistance has reduced first-line success rates. NSAIDs, including low-dose aspirin, cause gastroduodenal ulceration that is frequently asymptomatic until complicated by bleeding, and risk is compounded by concurrent anticoagulants, corticosteroids or SSRIs. Observational associations between long-term PPI use and dementia, renal disease and fracture are substantially confounded by indication and causality is not established; BioSignal grades the dementia claim NOT ESTABLISHED and declines to amplify it.
References & sources
- Maastricht/Florence consensus report on the management of Helicobacter pylori infection
- IARC monograph classifying Helicobacter pylori as a Group 1 carcinogen
- NICE CG184 — Gastro-oesophageal reflux disease and dyspepsia in adults
- Randomized trials of H. pylori eradication and gastric cancer incidence
- Studies of PPI and antibiotic effects on the accuracy of H. pylori testing
Educational information — not medical advice
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