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.

A new study has found that laboratory mice that are transplanted with the gut microbiota of wild mice are less likely to die from a flu virus infection or develop colorectal cancer than laboratory mice with their own gut microbiota.