Dismiss Modal

Nutrition

Registered Dietitian Nutritionist (RDN)

Choose a preferred language

Registered dietitian nutritionists (RDNs) are food and nutrition experts. They assess your health and nutritional needs. They come up with plans to meet those needs. RDNs are trained to help you with a variety of food, nutrition, and health needs. These include:

  • Helping you lose or gain weight

  • Finding foods that help ease swallowing

  • Coming up with special diets for certain conditions. These include celiac disease, food allergies, gout, and digestive problems.

  • Understanding dietary changes that need to be made because of a disability

  • Helping with tube feeding formulas and schedules if you can’t swallow

  • Teaching you and your family about nutrition topics linked to diseases. Examples are diabetes and heart disease.

  • Helping you overcome an eating disorder

  • Finding foods to help your athletic performance

  • Teaching you how to plan and prepare healthy meals

  • Helping you get ready for or adjust to eating after having weight-loss (bariatric) surgery

  • Teaching you about child nutrition

  • Teaching about good nutrition before, during, and after pregnancy

  • Giving you information about nutritional changes you need to make as an older adult

RDNs practice in many different settings. These include:

  • Hospitals

  • Inpatient rehab (rehabilitation) centers

  • Home health settings

  • Private practice and consulting

  • School districts and universities

  • Community or government nutrition programs

  • Fitness centers and sports programs

  • Culinary schools and restaurants

  • Media, communications, social media, and food marketing

  • Grocery stores

RDNs hold an undergraduate degree. They have completed an approved internship program and have passed a national exam. This allows them to be credentialed as registered dietitian nutritionists. Many have also earned a master's degree in dietetics, public health, or nutrition science. Beginning in 2024, a graduate degree will be the minimum degree requirement for people wanting to become RDNs.

RDNs must complete ongoing professional educational requirements to keep their registration. Some RDNs also hold other certifications in special areas of practice. These include diabetes care and education, sports dietetics, nutrition support, and oncology, pediatric, or renal nutrition.

© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
Related Articles
Read article
Wellness
Why Diets Don't Work

Research clearly shows that most diets don't work. Even those of us who lose weight on a diet generally regain most or all of the weight within a couple of years. But the way most diets are set up often leads to failure.

Read article
Wellness
MyPlate Worksheet: 2,200 Calories

Your calorie needs are about 2,200 calories a day. These are the USDA guidelines for your daily recommended amount of each food group.

Read article
Wellness
Nutrition and MyPlate: Dairy

The dairy group includes foods that are made from milk and are also high in calcium (a nutrient that builds strong bones). If you're lactose-intolerant or allergic to milk, there are other ways to get calcium too. Read on for more details.

Read article
Wellness
Discharge Instructions: Eating a High-Potassium Diet

People with low blood levels of potassium and those with high blood pressure may be prescribed a high-potassium diet. This sheet can get you started.