Global health refers to the study, research, and practice of improving health and achieving equity in health for all people worldwide. It involves addressing health issues that transcend national boundaries, such as pandemics, infectious diseases, and health disparities. Global health focuses on promoting health and well-being, preventing diseases, and ensuring access to healthcare services for all populations, regardless of their geographic location or socioeconomic status. Researchers in this field may investigate health systems, policies, interventions, and strategies to improve the health outcomes of populations globally.