This academic textbook is ideal for undergraduate students, in accordance with the medical, dental and nursing curriculum. Moreover, it is helpful for FCPS and PhD fellows, health managers, researchers, NGO professionals and those having interest in learning the intricacies of public health. The text is based on a constructivist approach and the information provided covers every part of syllabus, effectively. The book lays emphasis on viva questions and the learning objectives are given at the start of each chapter. In addition to traditional topics, the book discusses the topics which have emerged recently and now considered important public health issues. One of the unique features of this textbook is its approach of presenting all the essentials of Community Medicine/ Community Health Sciences and Public Health, in an easily understandable manner.