Dietitian nutritionists use diet and nutrition science to help people improve their health, Nutrition and nutritional technicians work with dietitian nutritionists to afford care and consultation to patients. Both dietitian nutritionists and nutrition and dietetic technicians may also provide general nourishment education. The field of dietetics has a strong emphasis on public health and a commitment to educating all Americans about the importance of making proper dietary choices. Nutritional science mainly deals with the effect of the food we consume. Dieticians assess, diagnose and treat diet and nutrition problems at a private and wider public health level.