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A Registered Dietitian Nutritionist (RDN) is a licensed health professional who has completed an ACEND-accredited degree program, a minimum of 1,000 hours of supervised practice, and passed the national Commission on Dietetic Registration (CDR) exam. A nutritionist, by contrast, is a broader and less regulated title — the qualifications, training, and scope of practice vary significantly by state. While both professionals work in food and nutrition, the RDN credential represents the highest standard of education and clinical training in the field.
Dietitians
A Registered Dietitian Nutritionist (RDN) — also referred to as a Registered Dietitian (RD) — is a food and nutrition expert credentialed by the Commission on Dietetic Registration (CDR) and recognized by the Academy of Nutrition and Dietetics. RDNs develop personalized nutrition plans, provide medical nutrition therapy, work in clinical and community settings, and may specialize in areas such as sports nutrition, pediatrics, or oncology.
The Journey
- Dietitians undergo extensive academic and professional training.
- Steps include earning a degree, supervised practice, and passing a national exam from the Commission on Dietetic Registration.
- Continuous learning is crucial, with regular engagement in continuing education.
Versatile Careers
- Dietitians organize food and nutrition programs, promoting healthy habits.
- They work in diverse settings, from healthcare to food businesses.
- Some choose private practice for creative client therapy.
Credentials and Accreditation
- Registered Dietitian Nutritionists (RDN) complete an ACEND-accredited degree program — the Accreditation Council for Education in Nutrition and Dietetics — which sets the national standard for dietetics education.
- The RDN credential ensures evidence-based practice and quality.
Nutritionists
In the United States, the title "nutritionist" is not federally regulated and can be used by individuals with varying levels of training and education. Unlike the RDN credential, which requires ACEND-accredited education, supervised practice, and a national exam, the nutritionist title carries no universal minimum standard — though individual states may impose their own licensing requirements.
Varied Training and Services
- Nutritionists may have diverse training, using the term for services like education, food science, wellness, sports, and fitness.
- Certification boards exist. They require advanced degrees and practical experience for titles like certified nutrition specialists or (CNS), which is a protected title.
Clinical Nutrition and Advanced Credentials
- Various health care professionals, including doctors, practice clinical nutrition after extra study in food and nutrition science.
- Advanced credentials can be issued by professional associations or certifying agencies, leading to varying standards of practice.
Focus Areas and Support
- Nutritionists primarily work with food behavior and population health.
- They guide general nutritional wellness guidelines and offer nutrition supervision.
Legal Considerations
- Only professionals who have met all CDR requirements — including ACEND-accredited education, supervised practice hours, and passing the national exam — may use the protected title of Registered Dietitian Nutritionist (RDN) or Registered Dietitian (RD).
- The nutritionist profession is less protected by law, prompting the need to check individual state rules for legal practice requirements.
Careers in Dietetics and Nutrition
A career in nutrition and dietetics spans a wide range of settings — from hospitals and schools to private practice, corporate wellness, and public health. Earning a recognized credential such as the RDN or CNS is the most reliable way to distinguish yourself in this growing field.
- Credentials such as the RDN and CNS demonstrate verified education, supervised training, and professional accountability — and are increasingly required by employers in clinical and healthcare settings.
- Effective January 1, 2024, the Commission on Dietetic Registration (CDR) requires a minimum of a master's degree for new RDN candidates — making graduate-level nutrition education an essential step for entering the profession.
- Be sure to check for additional licensing requirements in the state of desired practice.
- NSU's ACEND-accredited M.S. in Nutrition prepares graduates for credentialed careers in dietetics and nutrition, with concentrations in sports nutrition, community nutrition, functional nutrition, and herbal therapy.
Explore the Current Practice Laws in Florida
Job Outlook
- Employment of dietitians and nutritionists is projected to grow 6% from 2024 to 2034, faster than the national average for all occupations, according to the U.S. Bureau of Labor Statistics.
- The Bureau of Labor Statistics notes increased interest in food and nutrition for health and wellness, especially in preventive health care.
Salary Insights
- The most recent U.S. Bureau of Labor Statistics data reports a median annual wage of $73,850 for dietitians and nutritionists (May 2024). Salaries vary by work setting, specialization, credential, and geographic location.
Alternative Career Paths for Nutrition and Dietetics Graduates
A degree in nutrition opens doors well beyond clinical dietetics. The following roles are common career paths for nutrition graduates, many of which can be pursued with or without the RDN credential depending on the state and employer.
Community health workers with a nutrition background help underserved populations access healthy food resources, develop community nutrition programs, and address diet-related health conditions such as diabetes and obesity. They often work for public health agencies, nonprofits, and school districts.
Food scientists apply nutrition science to the development, safety, and labeling of food products. They work for food manufacturers, government agencies, and research institutions, and may also contribute to public health nutrition policy, food journalism, or nutrition communications.
These professionals teach individuals and communities about behaviors that enhance overall wellness. They formulate and execute strategies to improve health on individual and community levels.
Nutrition and Dietetic Technicians, Registered (NDTR) work under the supervision of Registered Dietitian Nutritionists in food service management, community health, and long-term care settings. As of January 1, 2024, a minimum of a bachelor's degree is required to sit for the NDTR credentialing exam, administered by the Commission on Dietetic Registration (CDR).
The minimum of a bachelor's degree is now required.
Registered Nurses with a background in nutrition are increasingly valued in clinical settings for their ability to integrate dietary counseling into patient care. RNs with nutrition expertise work in hospitals, outpatient clinics, and home health, supporting patients managing conditions like diabetes, heart disease, and eating disorders.
Sports nutritionists and sports dietitians work with athletes at all levels — from recreational participants to professional and collegiate teams — to optimize performance through evidence-based nutrition strategies. They develop individualized fueling plans, support recovery from injury, and advise on supplementation and hydration. Sports dietitians may work for professional sports organizations, university athletic departments, fitness centers, or in private practice. NSU's M.S. in Nutrition offers a sports nutrition concentration for students pursuing this career path.
Ready to Start Your Nutrition Career at NSU?
NSU's ACEND-accredited M.S. in Nutrition is a 30-credit online and hybrid program completable in as little as one year. With concentrations in sports nutrition, community nutrition, functional nutrition and herbal therapy, and the professional practice (RDN) pathway, the program prepares graduates for credentialed careers across the full range of nutrition and dietetics settings. Open advising sessions are held every Friday from 11:00 a.m. to 12:00 p.m. ET via Zoom.
Learn About NSU's M.S. in Nutrition