The book is sort of an autobiography of Jordan Rubin.He was deathly ill with Crohn’s disease, and practically a living/walking skeleton.He was not getting anywhere with allopathic medicine and the naturopathic medicine was just giving him what he needed to hang onto life.Until one day he came across some awesome help!With the help of a somewhat Mediterranean diet and some nutritional therapy including probiotics, specifically soil based organisms he regained his health.He touts this book as his 40-day health plan.
I found this book to be a wealth of knowledge - yes he recommends his products.But even if you just follow his diet you will see dramatic health results.