When it comes to understanding the difference between a Registered Dietitian and a nutritionist, the lines tend to be blurred to the general public. Most people assume that they both only provide meal plans for patients and other individuals. What a large portion of the general public does not know, is that there are some major differences between these two professions. It is important to be informed on the differences between a Registered Dietitian (RDN) and a nutritionist, in order to decide which is the right fit for your goals. Some of the differences that we are going to cover include:
- Education
- Certifications/ Licensing
- Scope of practice
- Credentialing
- Places of work
- Insurance coverage
What is a Nutritionist?
A nutritionist can achieve their title in a couple different ways. They can complete a certification course online, or achieve a bachelors in nutrition. Most likely after achieving a bachelors in nutrition, an exam will need to be taken (administered by the Board for Certification of Nutrition Specialists) to receive a certification. One thing that is important to note, Nutritionists do not necessarily need a degree to achieve this title. Again, they can complete an online course to become certified, however some employers will require a Bachelor’s degree in a nutrition related field. Some states require licensure for nutritionists, while other states do not. A lack of licensure limits their scope of practice even more.
Additionally, due to the minimal education requirements, nutritionists cannot provide any specific medical treatment to patients or clients, which includes medical nutrition therapy. Nutritionists are also not covered by insurance, due to their lack of medical necessity. They are not licensed to help patients with their specific health conditions; therefore, most doctors will not send a referral for insurance. Nutritionists can work in similar environments to an RDN; however, they are much more limited in their selection due to having less education and a title that is not legally protected. Some places you may find a nutritionist include:
- Nursing homes
- Government agencies (such as WIC, SNAP, or school meal programs)
- Nonprofit businesses
- Private consultations (they can work for themselves)
- Corporate companies (some companies hire nutritionists to educate employees)
- Relief organizations
- Gyms/fitness centers
What is a Registered Dietitian?
Registered Dietitians are highly trained, and certified individuals due to the qualifications required of them. Dietitians have been required to obtain a bachelor’s degree for quite some time. However, as of 2024, dietitians are now required to obtain a Master’s degree in dietetics. In addition to a Master’s degree, dietitians are required to obtain 1,000 hours in an in-person didactic internship hours alongside a Registered Dietitian. Once the internship hours and master’s degree are completed, dietitians need to take and pass a national board exam for their credentialing.
In addition to these requirements, dietitians must continue to earn “continued education hours” every five years to keep their licensure and continue to provide evidence-based care to patients. The title of ‘Registered Dietitian” is legally protected, meaning that not anyone with a nutrition background can call themselves a dietitian. Additionally, Registered Dietitians have the opportunity to be covered by insurance, which can be cost effective for many patients. Many doctors will refer patients to a registered dietitian for nutrition counseling, helping increase the likelihood of insurance coverage. Some places you may see a Registered Dietitian include:
- Hospitals
- Outpatient clinics
- Long term care facilities
- Rehab centers
- Public health centers
- Schools
- Fitness centers or gyms
- Food manufacturing
- Private Practices
- Research centers
- Sports nutrition: college or professional sports teams
- Teaching
Scope of Practice for a Registered Dietitian
This accomplishment of education allows Registered Dietitians to provide medical nutrition therapy to patients. Medical Nutrition Therapy is the treatment and management of medical conditions through nutrition. Registered Dietitians are licensed to assess, diagnose and treat various medical conditions, through nutrition intervention. Additionally, dietitians are licensed to work in various different environments, like the ones listed above. The scope of practice may be specific to that dietitian’s place of work. Scope of practice may also be dependent upon a dietitian’s current training (if it is current). Scope of practice is oftentimes state-specific and is based on state licensure guidelines. However, dietitians nationwide are licensed to provide Medical Nutrition Therapy, which may be very beneficial for patients facing one or more medical conditions.
Now that you know the difference between a Nutritionist, and a Registered Dietitian, the choice is up to you. If you want a chance of insurance coverage, help with Medical Nutrition Therapy for a specific condition, or just have goals for your health, speak with a Registered Dietitian to see if they are the right fit for you.
References:
Cleveland Clinic. (2023, June 5). Dietitians vs. nutritionists: What’s the difference?. Cleveland Clinic Health Essentials. Retrieved August 5, 2025, from https://health.clevelandclinic.org/dietitian-vs-nutritionist/ en.wikipedia.org+14health.clevelandclinic.org+14h
Commission on Dietetic Registration. (2023, December 20). Scope and Standards of Practice 2024 for the Registered Dietitian Nutritionist (RDN) [PDF]. Commission on Dietetic Registration. Retrieved August 5, 2025, from https://www.cdrnet.org/vault/2459/web//20231220%20Scope%20Standards%20of%20Practice%202024%20for%20the%20RDN_FINAL.pdf
NutritionEd.org. (n.d.). Registered dietitian vs nutritionist – Unraveling what’s the difference. Retrieved August 5, 2025, from https://www.nutritioned.org/dietitian-vs-nutritionist/
