MTHFR Mutation? Start Here to Learn! Seeking Health MTHFR, Hashimoto's, and Nutrients Dr. Izabella Wentz MTHFR Gene Mutation and Enzyme Activity At Home Health Tests The detox gene (MTHFR) is rendered inactive when your diet is high in meat. Our diet should be 80% plant based or higher. MTHFR Gene Mutation and Enzyme Activity At Home Health Tests Common MTHFR Mutations and General Health