Functional gastrointestinal disorders articles from across Nature Portfolio

Functional dyspepsia (FD) is a common chronic gastrointestinal disorder. Here, in a randomized, parallel-group, positive-drug, and placebo-controlled clinical trial, the authors show that supplementation with the probiotic Bifidobacterium animalis subsp. lactis BL-99 (BL-99) improves FD clinical response rate and promotes accumulation of SCFA-producing microbiota.

Here, the authors show a causal role for gut bacteria-derived metabolites tryptamine and phenethylamine in contributing to insulin resistance and the development of metabolic syndrome in patients with irritable bowel syndrome and type 2 diabetes.

Key studies published in 2022 further established the importance of alterations in the gut microenvironment and interactions with the enteric and central nervous systems in symptom generation in irritable bowel syndrome and suggested novel and clinically accessible therapeutic approaches for this large group of patients.

We need to talk about poo. Everybody does it, and research into defaecation and associated disorders deserves more attention.