Nutrition Therapy: What It Is and What to Expect
Medically reviewed by Sumiran Racherla, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor provides Nutrition Therapy?
A registered dietitian, a food and nutrition expert, usually provides nutrition therapy. Medical nutrition therapy is nutrition counseling from a registered dietitian to help meet your medical or health goals. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What it is
Medical nutrition therapy, or MNT, uses nutrition education to manage, treat, or prevent chronic diseases and conditions. A registered dietitian can provide MNT, which includes counseling to help you create and follow a meal plan. The details below cover diabetes and chronic kidney disease only.
Why a doctor might recommend it
Healthy kidneys balance salts and minerals in the blood. For people with chronic kidney disease, nutrition therapy can help delay the disease from getting worse. It can also help prevent or treat complications and improve quality of life.
For people with diabetes, carb counting and the plate method are two common ways to plan how much to eat or drink. Your body turns carbs from food into glucose. Carb counting means planning and keeping track of the amount of carbs you eat and drink in each meal or snack. You can still have your favorite foods and drinks. You might need smaller portions or to have them less often. Not all people with diabetes need to count carbs. The plate method helps you control portion sizes without counting and measuring. Half of your plate should be nonstarchy vegetables, such as leafy greens, peppers, carrots, or green beans. One quarter should be protein foods, such as lean meats, fish, dairy, or tofu. One quarter should be carb foods that are high in fiber, such as brown rice, whole grains, beans, or fruits.
How to prepare
Common preparation steps include the following.
- Ask your insurance company if your benefits include MNT.
- If you have diabetes, talk with your provider about when you should eat or drink.
- Tell your health care team about any challenges you have finding healthy food.
What happens during it
The services you get may include an initial nutrition and lifestyle assessment. You may have individual sessions, group sessions, or both.
With kidney disease, a dietitian can help you find the right balance of protein. They can also help you find your sodium limit.
One tip for kidney disease is to cook foods from scratch. When you prepare your own food, you control what goes into it. Use spices, herbs, and sodium-free seasonings in place of salt. Try slowly cutting the amount of sodium in your diet over time. Your taste buds will gradually adjust.
Recovery
Follow-up visits check on your progress.
With kidney disease, a provider can check your potassium level using a blood test. A dietitian can help you adjust your food and drink choices to meet your potassium goal. Contact your provider if you notice any swelling in your face, arms, legs, or abdomen.
Risks and side effects
There is no clear proof that specific foods, herbs, spices, or dietary supplements can help manage diabetes. Talk with your provider before you take any supplements. Some may cause side effects. Some may change how well your diabetes medicines work.
In kidney disease, too little protein may lead to malnutrition. Malnutrition is when your body does not get enough nutrients. What you eat and drink may also affect how well your kidney disease treatments work.
You should also limit how much alcohol you drink. If you take insulin or certain diabetes medicines, drinking alcohol can make your blood glucose level drop too low. Low blood glucose in this case is called hypoglycemia. Talk with your health care team about your alcohol-drinking habits. Ask your provider how much alcohol is safe for you.
Who performs it
A registered dietitian provides this care. You can find a dietitian who specializes in kidney disease through your provider.
Common questions
Should I take supplements as part of nutrition therapy?
Talk with your provider before you take any supplements. Some may cause side effects or affect how well your diabetes medicines work.
Does a doctor need to refer me for nutrition therapy?
For Medicare coverage, yes, a doctor must refer you for the services. With kidney disease and Medicare, you need a written referral from a doctor.
How does a direct primary care or concierge doctor fit in?
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
Sources
- Medicare.gov - Medical nutrition therapy services
- National Institute of Diabetes and Digestive and Kidney Diseases - Healthy Eating for Adults with Chronic Kidney Disease
- National Institute of Diabetes and Digestive and Kidney Diseases - Healthy Living with Diabetes
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
