A dietician is an expert in human nutrition. As a registered dietician in private practice, Samantha du Toit is responsible for advising people on the best types and amounts of foods they should eat for optimal health, taking into consideration medical diagnoses, their lifestyle, age, budget and taste in food. According to her, dieticians coach and support people on all aspects of healthy food choices from shopping to preparation and portioning of food. They use scientific evidence-based guidelines in order to give the best advice to every patient.