Dietitian vs. Nutritionist: Degree and Careers Comparison

Degrees Needed for Dietitians

According to the Commission on Dietetic Registration (CDR), prospective dietitians must complete a graduate degree from an accredited institution, along with coursework and supervised practice through programs accredited by the Accreditation Council for Education in Nutrition and Dietetics (ACEND). Programs confirm completion with a verification statement. One route combines a Didactic Program in Dietetics (DPD) with a dietetic internship; ACEND-accredited coordinated and graduate programs are other routes. Some people complete a degree in clinical nutrition, dietetics or public health nutrition that includes a DPD.

Supervised practice is completed through an ACEND-accredited program, such as a dietetic internship, which some programs combine with graduate studies. Once CDR confirms eligibility, graduates may sit for the registration exam. The graduate degree requirement took effect on January 1, 2024, for people seeking exam eligibility for the first time; people who were already registered or eligible before that date are exempt. Besides regular master’s in nutrition and dietetics programs, other ACEND-accredited graduate programs combine the degree with the education and supervised practice needed to sit for the exam. If public health interests you, our MPH/RD programs overview is a place to start, but confirm a program’s ACEND accreditation first, because a public health degree alone, including one with a nutrition concentration, does not establish RD eligibility. Our CDR exam guide explains what the test covers.

Some states also have additional licensing requirements. RDs must also complete 75 continuing professional education units every five years, including one in ethics or health equity, to maintain their registration.

What Are the Differences Between RD vs. RDN?

The registered dietitian (RD) and registered dietitian nutritionist (RDN) credentials have identical meanings, according to CDR. RDs may use either one, and RDN is offered to those who want to emphasize the nutrition aspect of their credential. This distinction highlights that all registered dietitians are nutritionists, but not all nutritionists are registered dietitians.

Can I Complete the Dietetic Internship (DI) After My Master’s Degree?

Yes, if the program is ACEND-accredited and you meet the CDR eligibility requirements for your pathway. Because a graduate degree is now generally the minimum requirement for first-time eligibility, students can complete the Dietetic Internship (DI) either during or after a master’s degree.

Degrees Needed for Nutritionists

The title “nutritionist” has no standardized meaning, and requirements to use it vary by state, so education varies widely. You may earn a bachelor’s degree in nutrition, a master’s in nutrition or a Master of Public Health with a concentration in nutrition. The number of years of education and training needed will depend on what credential you choose to obtain. One option is the certified nutrition specialist (CNS) credential. Other nutritionist titles exist with different requirements, so check who issues a credential and what it requires.

The CNS is awarded by the Board for Certification of Nutrition Specialists (BCNS). For nutritionists and other health professionals, CNS eligibility includes:

• Education: graduation from an ACNPE-accredited program, or a qualifying master’s or doctoral degree plus 36 semester credit hours of required coursework
• 1,000 hours of supervised practice experience under a BCNS-approved supervisor; candidates who begin earning hours on or after April 1, 2026 must first complete BCNS’s candidate training
• Passing the CNS exam

From January 1, 2032, candidates must complete supervised practice through an accredited program or one in the accreditation pathway (ACNPE), according to the BCNS transition schedule. Non-accredited supervised practice hours are accepted through December 31, 2031. BCNS describes CNS practitioners as using medical nutrition therapy and counseling; what a CNS may legally do still depends on state law.

What Does a Nutritionist Do?

According to O*NET, common tasks in the combined dietitian and nutritionist occupation include counseling individuals and groups on good nutrition and healthy eating. Nutritionists may work with individuals or groups to teach them about nutrition, food and health, including advising individuals and families on diet plans and on food selection and preparation. Because the title is not standardized, what a particular nutritionist does depends on their training and credentials.

Where nutritionists work also depends on their training and credentials. The Academy of Nutrition and Dietetics fact sheet lists settings where registered dietitian nutritionists work, and credentialed nutritionists may work in some of the same ones:

• Hospitals and other health care facilities.
• Government agencies and community or public health programs.
• Schools.
• Private practice.
• Research and sports nutrition programs.

Limitations: What a nutritionist may do depends on the state and on the person’s credentials. Because nutritionists do not necessarily hold a certification or license, some states may restrict them from offering specific nutrition counseling or treating medical conditions, and insurance reimbursement often depends on the provider’s credentials. State approaches range from open use of the title to formal requirements. Virginia, for example, restricts certain titles to people who meet defined qualification routes, and Colorado’s 2025 law provides for licensure of medical nutrition therapy starting September 1, 2026, with exemptions. Title protection, a professional credential and legal permission to provide medical nutrition therapy are different things, so check your state’s requirements on the Academy of Nutrition and Dietetics licensure map.

What Does a Dietitian Do?

Dietitians teach people and populations about nutrition, food and health. According to the Academy fact sheet, registered dietitian nutritionists work in the settings listed above and also in food and nutrition businesses, correctional facilities, and universities and medical centers.

A significant difference between a nutritionist and a dietitian is that dietitians provide medical nutrition therapy to help treat and manage medical conditions. In clinical roles, RDNs provide this care as part of a health care team. According to Academy guidance, RDNs check for signs of disordered eating during the nutrition assessment and refer clients to a mental health professional when needed; diagnosing an eating disorder is not the RDN’s role.

Simply put, dietitians create unique nutrition plans for their clients and help them maintain healthy eating habits based on their medical needs. O*NET lists tasks such as:

• Assessing nutritional needs, diet restrictions and health plans, and recording health and food history, including allergies and medications.
• Incorporating patients’ cultural, ethnic or religious preferences into nutrition plans.
• Evaluating lab tests and consulting with physicians and health care staff about patients’ nutritional needs.
• Creating dietary-care plans and advising patients and families on diet plans and on food selection and preparation.

RDs may also manage foodservice operations, including food purchasing and preparation and the staff who carry out meal plans, according to the Academy fact sheet.

Dietitian vs. Nutritionist Salary and Employment

The U.S. Bureau of Labor Statistics (BLS) reports wage and employment data for dietitians and nutritionists as one occupation, so it does not publish separate figures for each title. In the BLS May 2025 estimates, the median annual wage for dietitians and nutritionists was $76,400. The lowest-paid 10% earned less than $49,090, and the highest-paid 10% earned more than $103,720. About 77,570 people were employed in the occupation.

Dietitian vs. Nutritionist: Which Is Right for You?

The two main differences between a registered dietitian and a nutritionist are:

• Credential and regulation. RD and RDN are credentials awarded by CDR after a candidate meets its education, supervised practice and exam requirements, while “nutritionist” varies by state and by credential.
• Medical nutrition therapy. Medicare covers medical nutrition therapy for diabetes, kidney disease and a kidney transplant within the last 36 months, with a doctor’s referral, when it is provided by a registered dietitian or a nutrition professional who meets certain requirements.

That being said, what each professional may legally do depends on state law, which varies. The CNS credential is more standardized than the title itself: it requires a qualifying degree or accredited program, 1,000 hours of supervised practice and passing the BCNS exam.

The right career path for you depends on your professional goals. Here are some points to consider:

• If you want to work closely with individuals to treat and prevent medical conditions, then you should consider becoming an RD and look into ACEND-accredited degree programs.
• If you want to promote individual and population-level health but are not keen on providing medical nutrition therapy, then earning a CEPH-accredited Master of Public Health with a concentration in nutrition and dietetics through an on-campus or online MPH program may be right for you.

It also is important to consider the laws of the state where you would like to practice. State rules vary, which can influence the education and training you pursue to reach your career goals.

• Review the step-by-step instructions in our guide: How to Become a Registered Dietitian (RD).