Not just a cliché: The science behind "gut feelings"
A popular science article examining the biological mechanism behind "gut feelings" – the bidirectional connection between the brain and the digestive system via the gut-brain axis. The article presents research on the enteric nervous system ("the second brain"), the vagus nerve, and the influence of the microbiome on emotions, cognition, and mood. However, researchers emphasize that there is insufficient evidence that sensations from the digestive system provide a reliable basis for decision-making.
A popular science article examining the biological mechanism behind "gut feelings" – the bidirectional connection between the brain and the digestive system. The article presents the enteric nervous system, known as "the second brain," which includes over five million neurons, and the role of the vagus nerve as a central conduit for transmitting signals between the brain, digestive system, and internal organs. It quotes researchers such as Peter Holzer from the Medical University of Graz and Dr. Emeran Mayer from the University of California, Los Angeles, who published a groundbreaking review in Nature Reviews Neuroscience. The article also reviews a 2024 study on the influence of the gut microbiome on multi-system diseases, and notes traditional Chinese medicine, which emphasized the connection between body and mind. However, the article emphasizes that despite the fascinating biological connection, there is very little evidence that sensations from the digestive system provide a reliable basis for better decision-making, and that Holzer himself qualified the term "gut feeling" as an oversimplification.