Your nose may be talking directly to your brain: Scientists uncover a hidden nose-to-brain circuit that could explain why slow breathing calms anxiety

Scientists found a nose-to-brain pathway affecting emotional states in mice. Slow nasal airflow produced calming effects, while faster airflow increased anxiety. This neural circuit connects nasal sensory neurons to brain regions involved in emotions. Repeated slow breathing stimulation reduced anxiety-like behavior in mice over time. Further research is needed to confirm this pathway's operation in humans.