What’s the difference between a nutritionist and a dietitian and does it matter?

The distinction between a dietitian and a nutritionist is a matter of education and training.

Dietitians are recognized medical professionals. The title Registered Dietitian (RD) and more recently the title Registered Dietitian Nutritionist (RDN) is one reserved for those who have completed specific education and credentialing requirements including a core of science - anatomy, physiology, chemistry, organic chemistry, biology, metabolism of proteins, fats, carbs, vitamins and minerals. RD/RDNs have also completed a clinical internship and passed a credentialing exam. They are obligated to complete continuing education throughout their career in order to maintain their credentials. 

The term “Nutritionist” is not regulated, so there are no official requirements for its use. Some nutritionists may have completed some education related to diet or food science or completed various programs in the nutrition-related health space. And some have not.

Most hospitals and physician practices require the RD/RDN credential as a term of employment for those wishing to practice clinical nutrition, which is in alignment with requirements for other ancillary care providers such as physical therapists, respiratory therapists, occupational therapists, speech language pathologists (speech therapists), and others!

Another great reason to work with a credentialed RD/RDN: If your health coverage reimburses you for working with a dietitian (as many health plans do - including Cigna, Aetna, United Healthcare, Oxford, Anthem, and more), they will require that the practitioner holds an active RD/RDN credential.

The take-away? In the complex and always-evolving field of nutrition and food science, we believe it is important to seek nutrition counseling from a fully credentialed RD/RDN.