Dietetics is the science of how food and nutrition affect human health. It involves applying nutritional knowledge to promote well-being, manage disease, and prevent health problems through proper dietary choices. Professionals in this field are called dietitians or registered dietitian nutritionists (RDNs).

Dietetics bridges the gap between food science and medicine. It plays a crucial role in maintaining overall health and managing conditions such as diabetes, obesity, heart disease, kidney disease, and gastrointestinal disorders.