Gut microbiota, with its close links to metabolism and the immune system, could potentially be a factor that lies at the core of good health. This means it can be positioned at the heart of the processes that influence the risk of contracting different diseases.

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.