Slow breathing and cold plunges promise calm. But real vagus nerve treatments are more complex and still under study.

The Northwell Health neurosurgeon has spent decades investigating how stimulating the vagus nerve can help bring relief to people with diseases caused by inflammation.

Various diseases can be treated by stimulating the vagus nerve in the ear with electrical signals. However, this technique does not always work. A study has now shown: The electrical signals must be ...