The science and practice of protecting and improving the health of communities through policy, education, and research.

Public health navigates tensions between individual liberty and collective welfare, between evidence-based intervention and community trust, and between global health equity and national resource allocation.

The concept of maslaha (public welfare) in Islamic jurisprudence offers a sophisticated framework for collective decision-making under uncertainty. The Sufi tradition's emphasis on the health of the community as inseparable from the health of the individual provides a relational rather than aggregate understanding of population health.