Can Helicobacter help with gut health?

Whether Helicobacter pylori can benefit gut health is scientifically controversial. H. pylori is primarily known as a pathogen causing gastritis, peptic ulcers, and gastric cancer. Some studies suggest that colonization might protect against certain conditions like asthma, reflux esophagitis, or Barrett's esophagus – the so-called 'hygiene hypothesis'. However, these protective effects are not well-established and are outweighed by the clear risks (cancer, ulcers). For gut health in the strict sense (gut microbiome, digestion), H. pylori plays no positive role; in fact, eradication therapy can temporarily disrupt the microbiome. Current guidelines recommend eradication upon detection to prevent long-term damage. The evidence for a health benefit of H. pylori is weak and mostly based on epidemiological associations. Therefore, the claim that Helicobacter promotes gut health is misleading and not supported by robust clinical data.