Microbiome tests are becoming popular among the lay public and health professionals to diagnose and manage microbiome-related conditions. A new consensus involving scientists in basic and translational science updates the ins and outs of microbiome testing in clinical practice.

Writing in Nature Reviews Microbiology, a group of scientists updates the healthy human microbiome concept by combining independent measures of both the host and the microbial community health, and proposes a framework for discovering health and disease-associated microbial signatures in diverse populations.

An altered gut microbiome has been linked to various chronic diseases. New findings in mice reveal that a disrupted paternal gut microbiome impacts pregnancy health and increases the risk of growth issues in their future offspring.

Chronic abdominal pain, diarrhea, constipation, and bloating are common gastrointestinal symptoms. While a structural or an organic disease can be suspected because of the symptoms and is often easy to be diagnosed by endoscopy or imaging methods, sometimes gastrointestinal symptoms are not related to any alteration that may be seen through diagnostic techniques, and consequently have been classified under the umbrella of “disorders of gut-brain interaction”.

While celiac disease affects predominantly the small intestine, the contribution of the small intestinal microbiota has been largely understudied. New findings characterize the duodenal microbiota in patients with active celiac disease and explores its functional relevance.

Patients usually ask for microbiome tests to manage gut-related issues, to find out what type of diet or food supplement fits best and to get information about the risk of developing chronic diseases. But what kind of information do microbiome tests provide and how reliable are their results for clinical practice?

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