The Second Brain: A Groundbreaking New Understanding of Nervous Disorders of the Stomach and Intestine cover
The Second Brain: A Groundbreaking New Understanding of Nervous Disorders of the Stomach and Intestine
ISBN: 0060930721
Buy on Amazon
Found in 2 comments on Hacker News
daniellarusso · 2020-10-21 · Original thread
Also, this book, The Second Brain, is a bit older, but relevant:

https://www.amazon.com/Second-Brain-Groundbreaking-Understan...

dillonmckay · 2020-08-03 · Original thread
The gut is a second brain, kinda...I have always been fascinated by this book:

The Second Brain

https://www.amazon.com/Second-Brain-Groundbreaking-Understan...

Author is Michael D. Gershon M.D., chairman of the Department of Anatomy and Cell Biology at Columbia University's College of Physicians and Surgeons at the Columbia-Presbyterian Medical Center in New York City.