Public health refers to the practice of promoting better health education, researching new innovative methods to cure diseases, enforcing laws and regulations to provide health care benefits, developing plans to aid community health efforts, preventing diseases and advocating general hygiene, etc. It aims to diagnose and treat mental and physical disorders and other mental health conditions. It incorporates health policy which refers to the practice of forming rules and plans in order to achieve healthcare goals within a community. Some of the diverse topics covered herein address the varied branches that fall under this category. This book provides comprehensive insights into the field of public health. It strives to give a fair idea about this discipline and to help develop a better understanding of the latest advances within this discipline. It is appropriate for students seeking detailed information in this subject, as well as for experts.