What it means
The RD or RDN credential requires formal education in nutrition, supervised practice and passing a national exam, plus ongoing continuing education. Many states also license dietitians. "Nutritionist" by itself is not a protected title in every state, so training can vary widely.
A dietitian can help turn calorie and protein targets into meals you can actually eat, manage side effects such as constipation or nausea through food choices, and adjust plans for diabetes, kidney disease or food allergies.
Medicare Part B covers medical nutrition therapy from a registered dietitian or qualified nutrition professional for people with diabetes or kidney disease, or after a kidney transplant in the last 36 months, with a doctor's referral. Many private plans cover dietitian visits too, sometimes for obesity.
Ask whether a dietitian has experience with weight management or GLP-1 medicines, since that is a specialty area.
Why it matters
A dietitian can help you meet protein and nutrient needs when a GLP-1 cuts your appetite sharply.