This article summarizes the final report of the research entitled "Apropiación del Principio de Precaución en las políticas públicas sanitarias: caso Plan Nacional de Salud Pública de Colombia" which is focused on the study of the Precautionary Principle and its incidence on public health policy of the Colombian legislation.The research covered the historical review of such principle in international legislation, especially on the environmental conventions.It also studied the conceptual exploration that has been carried out on the principle and its relationship with public health, particularly in regards to the Colombian National Public Health Plan, determining the principle's acquisition or not in such plan.As parallel research points, the concepts of health and risk are treated, which come into play