The Gut and Psychology Syndrome Diet has its foundation on the Specific Carbohydrate Diet (SCD) created by Dr. Sidney Valentine Haas to heal digestive disorders. SCD gained great popularity after a mother, Elaine Gottschall, healed her own child and became an advocate for SCD. Elaine Gottschall is also the author of the popular book Breaking the Vicious Cycle. Intestinal Health Through Diet.
Dr. Natasha Campbell-McBride has taken SCD and evolved it further to create a full protocol for healing digestive disorders and subsequent issues.