Epidemiology categorizes disease prevention into three levels: primary, secondary, and tertiary prevention.
1. Primary Prevention: This level aims to prevent the onset of disease before it occurs. It includes interventions such as vaccination, health education, and lifestyle modifications like promoting a healthy diet and regular physical activity.
2. Secondary Prevention: This involves early detection and prompt treatment of disease to halt its progression. Methods include screening programs and regular check-ups to detect diseases like cancer or diabetes at an early, more treatable stage.
3. Tertiary Prevention: This focuses on reducing the impact of an already established disease by minimizing complications and disability. It includes rehabilitation programs and ongoing treatment to manage chronic conditions.
