Why see a registered dietitian over a nutritionist? April 13, 2021 23:00 Updated A registered dietitian must complete a four year college degree Complete supervised practice Successfully pass a national registration exam Maintain continuing education credits to keep current in practice Related articles What are some of the reasons I would want to see a registered dietitian? How does a registered dietitian help support heart health? What can the registered dietitian do for me? What are some of the resources the registered dietitian will provide? What prescription medications and procedures treat hair loss?