Is Helicobacter useful for gut health?

Whether Helicobacter pylori is beneficial for gut health remains controversial. H. pylori is primarily known as a pathogen causing gastritis, peptic ulcers, and gastric adenocarcinoma. However, some epidemiological and mechanistic studies suggest a possible protective role against certain conditions, such as esophageal adenocarcinoma and asthma, potentially via immune modulation and effects on the gastric microbiome. Yet, the overall risk of inflammation and carcinogenesis outweighs any potential benefit in most populations. The provided context contains no specific information on Helicobacter. Therefore, this answer relies on general medical knowledge. There is no evidence-based recommendation to use H. pylori for gut health; eradication is standard for symptomatic infections. Evidence level: mixed – includes mechanistic and observational data but insufficient to support a beneficial role.