This document summarizes the different levels of influence on a patient's health: Individual, family, community, national, and international. At the individual level, a patient's health is shaped by their personal needs, experiences, habits, and beliefs. Familial relationships and social norms within communities also impact health. Nationally, factors like healthcare policies, media, and lifestyle affect patients. Globally, issues like immigration, pandemics, and medical tourism transcend national borders and influence health outcomes.