The inaugural volume of the 50 Studies series, 50 Studies Every Doctor Should Know presents key studies that have shaped the practice of medicine. Selected using a rigorous methodology, the studies cover topics ranging from dieting to cardiovascular disease, insomnia to obstetrics. For each study, a concise summary is presented with an emphasis on the results and limitations of the study, and its implications for practice. Brief information on other relevant studies is provided, and an illustrative clinical case concludes each review. A section of review questions and answers is included at the back of the book to ensure that readers take away the key messages from each study. For this new edition, the contents were reorganized to include ten new studies, and the references, guidelines, and implications of existing studies were thoroughly updated. This book is a must-read for health care professionals and anyone who wants to learn more about the data behind clinical practice.