Changsha Yuelu Specialized College. A dietitian (nutritionist) is a food and nutritional healthcare professional who helps people maintain or promote their health through the proper combination of daily diets.2022 Dietitian Changsha Exam Locations in Changsha Yuelu College of Technology. The emergence of the dietitian profession is an adaptation to the needs of social health. The profession of dietitian synthesizes the characteristics of chef, health care practitioner, medical, Chinese medicine, psychologist, marketer, administrator and other professions in one, which is a more comprehensive profession.