In epidemiology, disease prevention strategies are generally classified into three levels:
Primary Prevention: Aims to prevent the disease before it occurs. This includes activities such as vaccination, healthy diet, regular physical exercise, and prohibiting smoking. Secondary Prevention: Focuses on early detection and treatment to halt the progression of disease. This includes screening tests like mammograms for breast cancer and colonoscopies for colorectal cancer. Tertiary Prevention: Aims to manage and reduce the impact of the disease that has already occurred. This involves rehabilitation programs and treatments to reduce complications and improve quality of life.
