A dietitian is a healthcare professional specializing in food and nutrition, providing advice and personalized meal plans to promote healthy eating habits and address dietary and nutritional needs. Dietitians typically hold bachelor's degrees in dietetics, nutrition, or related fields, completing supervised internships and passing national exams to become registered dietitians (RDs) or dietitian nutritionists (RDNs). Nutritionists, however, may have diverse educational backgrounds, and their qualifications vary widely as the term isn't regulated like "dietitian." Some may have degrees in nutrition, food science, or public health, while others complete certificate programs or obtain credentials from professional organizations.