Nutrition in integrative and functional medicine encompasses a patient-/client-centered, healing-oriented approach to health that embraces both conventional and complementary therapies. Registered dietitian nutritionist (RDN) practitioners in integrative and functional medicine focus on nutrition care that is both preventative and interventional in addressing the root causes of disease. The Dietitians in Integrative and Functional Medicine Dietetic Practice Group, along with the Academy of Nutrition and Dietetics Quality Management Committee, have updated the Standards of Practice (SOP) and Standards of Professional Performance (SOPP) for RDNs working in nutrition in integrative and functional medicine.