Medicine studies practices that diagnose, treat and prevent diseases and disorders. It is divided into many sub-branches like epidemiology, immunology, microbiology, pharmacology, pathology and physiology to name a few. This book discusses the fundamentals as well as modern approaches of medicine. It elaborates on the various crucial theories, concepts and applications of the subject. The topics covered in the text provide detailed insights into this field of medicine. It aims to present researches that have transformed this discipline and aided its advancement. For all those who are interested in medicine, this text can prove to be an essential guide.