Dietitian vs Nutritionist: What's the difference?

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While anyone can call themselves a nutritionist, nutritionists cannot call themselves dietitians. Many people are misinformed about the distinctions between the two, which can cause them to seek out nutrition information that is most likely inaccurate or discreditable. 

So what is the difference?

A registered dietitian or dietitian nutritionist (RD or RDN) is a certified food and nutrition expert. RDs complete extensive education including a bachelor's degree, and now a required master's degree from an accredited program (as of 2024). They also complete a supervised practice requirement of at least 1,000 hours and pass a national exam. Some states will also require licensure. All RDs must maintain continuing education hours every year to stay up-to-date on the latest research.  As a dietitian, you are qualified to work in hospitals, outpatient clinics, food service, community settings, etc.  

Nutritionist is a term that is not regulated in many states, meaning anyone can call themselves that. Many times people who claim to be nutritionists have no credentials or education in the field.  This is concerning because following advice from someone not credentialed can be harmful and misleading. Nutritionists may have taken a course or training, but the education is nowhere near the same extent. The states that do regulate the term nutritionists, do require credentialing and will be more reliable sources for nutrition information. 

So if you're wondering, well who should I see? A registered dietitian will always be your best option for evidence-based nutrition information. They can apply their expertise to several nutritional concerns, and some even have credentials for specific populations or diseases.  If you plan on seeing a nutritionist instead, be sure to check their credentialing to make the most informed decision. 

KF

https://www.healthline.com/nutrition/dietitian-vs-nutritionist#bottom-line

https://www.eatright.org/become-an-rdn

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