This document discusses the different levels of disease prevention: 1) Primordial prevention aims to prevent risk factors from developing in a population through education and policies around nutrition, smoking, physical activity, and lifestyle changes. 2) Primary prevention removes the possibility of disease through actions like vaccination taken before disease onset, with approaches targeting whole populations or high-risk groups. 3) Secondary prevention stops disease at early stages through early detection (like dental screenings) and treatment to prevent progression and complications. 4) Tertiary prevention focuses on reducing impairments and disabilities in advanced disease through rehabilitation, exercises, reconstructive surgery, and prosthetics to promote adjustment to conditions.