The primary distinction between a dietitian and a nutritionist lies in their education and credentials. Dietitians typically have formal education, often holding a master's degree and completing supervised practice programs, which allows them to obtain licensure. They are qualified to develop and implement dietary plans based on medical conditions and individual needs. Nutritionists may have varying degrees of education and are not always regulated. While both provide valuable guidance on eating habits and nutritional choices, dietitians are often regarded as the more credentialed professionals, especially in clinical settings.