A Registered Dietitian Nutritionist is a food and nutrition expert who has completed the academic requirements to qualify for the interchangeable credentials: ‘RD’ or ‘RDN.’ In addition to earning a minimum of a bachelor’s degree at a university approved by the Academy of Nutrition and Dietetics' Accreditation Council for Education in Nutrition and Dietetics (ACEND) in nutrition science or related field, an RD must also complete an accredited, supervised practice program (similar to a residency) and then pass a rigorous national credentialing exam. Thereafter, a dietitian must complete continuing professional educational requirements to maintain registration on an ongoing basis. To be a ‘nutritionist,’ there are no credentialing requirements. Individuals seeking nutrition coaching or medical nutrition therapy should be aware that anyone can call themselves a ‘nutritionist’ without sufficient education and licensure to do so. The scientific background and expertise of a Registered Dietitian cannot be matched in the nutrition and wellness field.