Updated on September 23, 2025.
Whether you’re managing a chronic condition or looking to maintain your health, you’ve probably come into contact with several different types of healthcare providers (HCPs). You might see a cardiologist for heart issues or a gastroenterologist for stomach woes. If you’re looking to get in better shape or manage a nagging injury, you might visit a fitness trainer or a physical therapist.
Many people seeking to lose weight also consult with registered dietitians (RDs), often also known as registered dietitian nutritionists (RDNs). But weight loss is not the only goal that an RD can help you achieve. Pretty much anyone could use insight into how to incorporate more nutritious, wholesome foods into their diet. And for anyone managing a chronic condition, getting an RD’s input can help you optimize your treatment and well-being.
Here are a few of the ways you may never have realized a dietitian can help you.
What does a dietitian do?
RDs are educated and trained to advise patients and clients across a range of health issues related to eating.
“A dietitian can work clinically, usually in a hospital or medical setting,” explains New York City-based dietitian Kelly Hogan, MS, RD, CDN. “Many dietitians have private practices with various specialties, or they can work in corporate wellness, communications, food service, grocery stores, or as consultants for food companies.”
An RD is also trained to help navigate the ever-changing landscape of nutrition guidelines, as well as to interpret the latest research to help make recommendations for patients and clients.
Historically, an RD would typically have the equivalent of a bachelor’s degree in nutrition and dietetics. Prospective RDs must complete a yearlong accredited dietetic internship, pass a national exam, and complete continuing education credits. They must also abide by a code of ethics. As of 2024, dietitians were also required to hold a graduate degree in nutrition and dietetics.
By comparison, similar-sounding nutrition practitioners—like nutritionists or health coaches—may not have the same education or training. In fact, anyone can call themselves a nutritionist, regardless of how much training or education they have completed.
How does an RD fit in with other healthcare providers?
Despite the growing public interest in nutrition, HCPs like cardiologists, gastroenterologists, and primary care physicians may receive little education in the subject. Where nutrition education is lacking in the mainstream medical system, RDs can fill a crucial gap to help patients achieve well-rounded health.
“We only use evidence from scientific literature and peer-reviewed journals,” Hogan explains. And even though “diet” is part of their title, the role of the RD is to provide education, rather than to put you on a specific diet.
Why should I see a dietitian?
If your goal is to lose weight—for health or other reasons—an RD can absolutely help. But there are plenty of other reasons why seeing an RD could be beneficial. If you have one of these conditions or life circumstances, consider speaking with your HCP about getting a referral to an RD.
Remember that an RD doesn’t take the place of a medical specialist, nor should an RD tell you to ignore medical treatments you’ve already been prescribed.
Diabetes
An RD can help guide and optimize your blood sugar management through diet.
Digestive issues
From common gastrointestinal-related ailments (like constipation, diarrhea, bloating, gas, and heartburn) to more serious issues like celiac disease or Crohn’s disease, an RD can suggest dietary changes to help you pinpoint triggering foods and manage symptoms.
Heart problems, hypertension, or high cholesterol
A healthy diet is important when managing blood pressure and cholesterol and when treating heart problems. An RD can educate clients about nutrition choices that can reduce the risk of heart disease. They can also advise people on adopting healthier ways of eating, such as through a Mediterranean diet or the Dietary Approaches to Stop Hypertension (DASH) diet. They can factor in a cardiac rehabilitation plan for people who have experienced heart attack or heart failure, as well.
Cancer
Eating nutritious foods during cancer treatments can help you retain strength, maintain a healthy body weight, lower the risk of infection, and generally feel better.
When you’re sick and spending time going to and from treatments, sticking to a healthy diet can feel daunting. Chemotherapy can also cause side effects, like nausea, taste changes, mouth sores, vomiting, diarrhea, constipation, and loss of appetite. Many cancer treatment plans include an appointment with a dietitian, who will help you devise an eating plan that works best for you.
Pregnancy
RDs can be helpful during all stages of pregnancy—starting before conception through breastfeeding—to help ensure that you and baby are well-nourished.
An RD can also help manage gestational diabetes through dietary changes and can keep an eye out for other common pregnancy-related issues like heartburn and nausea. They can be helpful postpartum to ensure you stay well-nourished if you choose to breastfeed. Some specialists may also recommend specific dietary changes for people experiencing trouble conceiving.
Kids
Many dietitians specialize in pediatric nutrition, from infancy through puberty. Your pediatrician may suggest nutritional counseling if a child is underweight or overweight. RDs can also help parents navigate difficult medical diagnoses, like genetic conditions, autoimmune disorders, and/or signs of an eating disorder.
Fitness
Nutrition is important for sports performance. It can make or break a game, match, or race. Specialized sports dietitians can help make sure you’re fueled adequately for performance and recovery, whether you want to run faster, lift more weight, or feel more centered on the yoga mat.
Mindful eating
Many dietitians today specialize in a “non-diet” approach. They believe in intuitive eating and health at every body size. Such a holistic approach to mind-body wellness can help clients understand why certain restrictive diets they may have tried in the past have not worked for them.
RDs can also help people become more in tune with hunger and fullness cues. They may use other mindfulness tactics, such as starting with smaller portions, eating more slowly, and using one’s senses to appreciate meals.
Disordered eating
If you’ve ever been diagnosed with anorexia, binge eating disorder, bulimia, or another eating disorder, a dietitian is often a crucial part of the recovery and treatment team, in addition to other HCPs and therapists.
Fueling your body
There are many quick-fix, one-size-fits-all diet promises out there without much evidence to back them up. An RD can help you figure out how best to eat for your body and your health.
Getting started with an RD
If you’re interested in making an appointment with an RD but aren’t sure where to start, consider your goals and the kind of interpersonal style you enjoy. Many private practice RDs offer free introductory phone or video calls, which is a great way to get to know what they do and to see if they’re a good fit. Do some research to make sure they have the knowledge to treat your condition and to help you reach your goals or consult your HCP for a referral.
“You’ll want an RDN whose specialties and philosophies resonate with yours,” Hogan says.
