It is the responsibility, and moral and political mandate of the states to protect their populations from threats to health. The two most important mechanisms that assist in this task are public health policy and public health law. Public health policy can be defined as the process of consultation, negotiation, and research that leads to a plan of action that sets out a vision of identified public health goals. Public health law refers to the power and duty of the state to ensure the conditions for people to be fit and healthy. This book is a compilation of chapters that discuss the most vital concepts and emerging trends in this field. Also included herein is a detailed explanation of the various topics and applications of health policy and law. This book will provide comprehensive knowledge to the readers.