When Gut Rhythms Over‑Sync With the Brain, Mental Strain Rises — New Study Points to a Potential Biomarker for Anxiety and Depression
A large international study led from Aarhus University reports that unusually strong synchronization between the brain and the stomach’s slow electrical rhythm is linked with higher levels of anxiety, depression and perceived stress. Researchers scanned 243 people using fMRI together with electrogastrography and applied cross‑validated machine learning to show that increased fronto‑parietal coupling to the stomach’s roughly 20‑second rhythm indexed a dimensional signature of poorer mental health — challenging the idea that tighter body–brain coupling is always healthier and suggesting the stomach rhythm could become an objective biomarker for emotional distress (Neuroscience News summary) (preprint/full study).