MedicalTerminology DB

Meaning of registered dietitian: A registered dietitian is a credentialed nutrition professional who translates diet and nutrition science into individualized guidance supporting a patient's overall health.

Definition of registered dietitian

A registered dietitian is a health professional with specialized education and clinical training in food, nutrition, and their relationship to health. Earning the credential requires completing an accredited academic program, supervised practice experience, and a national credentialing examination, along with ongoing continuing education to maintain the title.

Registered dietitians assess a person's nutritional status and help translate general nutrition science into guidance suited to an individual's health conditions, preferences, and goals, work that can range from managing a chronic disease through diet to supporting recovery after surgery or illness.

Within a hospital or clinical setting, a registered dietitian often works as part of a broader care team, collaborating with physicians, nurses, and other health professionals to help address the nutritional dimension of a patient's overall treatment plan.

Also known as

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Used in a sentence

A registered dietitian was consulted to help develop a nutrition plan following the patient's surgery.

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Good to know

A registered dietitian is distinguished from the more general and unregulated title of nutritionist by the specific accredited education, supervised practice, and examination required to use the credential.

Written and maintained by James Murray Last updated July 26, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.