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-Understandi

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-Understanding-Disorders/dp/0060930721 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.