Like many books out these days, the consensus is that process foods are bad for us. This book is similar to Whole30 as to not eating dairy, processed foods, grains, various oils, etc. The only difference is the foods that are suggested are protein powders. This book has many requests to download various documents, and questions to take. Suggestions of which leaky gut you have and to follow to see they help. I did review some recipes which sound interesting. I've done whole30 twice, first time my skin was amazing. 2nd time my psoriasis took off. I'm going to follow the recommendations for my leaky gut and see what my outcome is.