Heart diseases, also called cardiac diseases, refer to conditions that affect the heart. The most common types of heart diseases include atherosclerosis, congenital heart defects, heart infections, arrhythmia, coronary artery disease (CAD), and cardiomyopathy. The major causes of heart disease include genetics, medications, lifestyle, infections, and other diseases. Lifestyle habits like smoking, and medical conditions like high blood pressure and high cholesterol are the major risk factors for heart diseases. Depending on the type of heart disease that a patient has, several treatment options may be used. However, some common strategies for managing heart conditions include lifestyle changes, surgery, and medications. Exercising regularly, avoiding or quitting smoking, eating a balanced diet, limiting alcohol intake, maintaining a moderate body weight, and managing the underlying conditions are few examples of lifestyle changes that can help reduce the risk of developing heart diseases. This book provides comprehensive insights into the field of cardiology. For all readers who are interested in cardiology, the case studies included in this book will serve as an excellent guide to develop a comprehensive understanding.