What is Public Health?

Public health focuses on preventing disease and injury at the community and population level rather than treating individuals. It identifies underlying causes and develops large-scale interventions to address issues such as gun violence, premature births, and chronic conditions. Covering a wide range of fields—including mental health, disaster response, and disease prevention—it relies on data-driven research to influence policies, behaviors, and programs that promote overall well-being. Specialists include microbiologists working on vaccines, behavioral scientists studying habits, epidemiologists analyzing health trends, and policy analysts shaping health systems. Public health operates at the intersection of science, policy, and community impact.