Large inter-individual variability exists regarding how our gut microbiota responds to dietary intervention. New findings in mice and people with obesity show that ‘responders’ to inulin may be identifiable from their gut microbiota before they receive the intervention.

Could our gut microbiota mediate the impact of bariatric surgery on severe obesity? A new cross-sectional study has found that interactions between the gut microbiota and bile acids metabolism may partially mediate the success of bariatric surgery in the medium term.