Helicobacter pylori is a bacterium colonizing the stomach lining, linked to gastritis, ulcers, and gastric cancer. The notion that H. pylori might be beneficial for longevity stems from the hygiene hypothesis: some studies suggest a protective role against esophageal cancer and asthma. However, the evidence is weak and conflicting. Current guidelines recommend eradication upon detection, especially in high-risk individuals. There is no robust evidence supporting a positive effect on lifespan. The potential benefits (e.g., immune modulation) do not outweigh the risks (cancer, ulcers). Therefore, H. pylori is not considered 'useful' for longevity. Research is still inconclusive, and individual factors like genetics, microbiome, and lifestyle are far more influential. Be cautious of exaggerated claims from alternative medicine.
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