A book on Gut Health

This book is themed around eating more whole foods and less or no processed foods. It talks to the science behind certain food choices and their impacts. it also mentions the mental health benefits of eating the right foods.

I have some work done on it but would like it fleshed out more and include illustrations.

Does not have to be a lengthy book as it is meant to be a helpful and factual publication that can be referred to at any time.