Nourish your body and regulate your immune system--the autoimmune protocol simplified The autoimmune protocol (AIP) was developed around a simple, science-backed concept: What we eat--or dont eat--has the ability to powerfully impact our health. By eliminating foods that Karissa Long is a global health coach and wellness expert. After using the autoimmune protocol to successfully heal her body and put her ulcerative colitis in remission, Karissa has taken everything she learned through her own health journey and has made it her mission to help others achieve optimal health. Katie Austin is an executive chef and recipe developer who, after years of trying different treatment methods in an attempt to control her autoimmune diseases, discovered the autoimmune protocol and experienced a health transformation. Her goal is to make AIP cooking easy, attainable, and beautiful.