Dietitians Nutrionist Syeda Amina Iqbal Dietitians and nutritionists is an expert in food and diet and help people maintain good health and prevent or treat health conditions. With various credentials and qualifications, dietitians and nutritionists are often mislabeled. She talked more about general nutrition, food and health. Their focus is on food behavior. This includes working with individuals to devise and implement meal plans that improve the individual or family's nutrition.