This document discusses the intersection of health and policy, noting key differences in how they are measured. Health outcomes are measured in long-term absence of disease, while policy outcomes are measured over shorter election cycles. It is difficult to quantify the non-manifestation of disease from policy. The document reviews theories like social ecological theory and life course theory that can help measure health factors. It provides historical examples of early US health policies like maritime hospital acts and the growth of the Public Health Service over the 19th-20th centuries to take on roles like immigration health screening and disease prevention.