Amazing book! I am interested in Allan Savory's work in Holistic Management and wanted to know more about the microbiology of the soil. I also have Crohn's disease and this made it easier for me to understand my immune system and condition. Thank you for writing this book! Brilliant! By the way, 20% (50 Million) of the US population has some sort of autoimmune disease and 75% of cases affects females. This book was perfect for me to read. I will be using all the information as a jump-off ground.