A public health nutritionist, also called a community dietitian, is a professional who works to improve the eating habits and nutritional health of populations rather than counselling individual patients. Typical work includes designing community programmes to raise fruit and vegetable consumption, running school and workplace nutrition initiatives, advising local authorities on food policy, and evaluating whether interventions actually change diets. The role blends nutrition science with health promotion, epidemiology, and an understanding of the social and economic barriers that shape what people eat. Public health nutritionists often work for government agencies, health services, or charities, translating dietary guidelines into practical action for groups such as low-income families, older adults, and ethnic communities with specific dietary needs.