Scientists show gut bacteria can reach the brain in mice and reveal a potential vagus nerve pathway

https://www.news-medical.net/news/20260315/Scientists-show-gut-bacteria-can-reach-the-brain-in-mice-and-reveal-a-potential-vagus-nerve-pathway.aspx A new mouse study reveals that under certain dietary conditions, gut bacteria can reach the brain without entering the bloodstream, suggesting a possible vagus nerve route and raising new questions about the gut–brain connection.