Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The term “cardiovascular disease” refers to any disease that affects the heart and blood vessels. According to the World Health Organization, cardiovascular diseases are the leading cause of deaths globally. Heart diseases affect equally men and women, and the majority of deaths caused by cardiovascular diseases occur in low- and middle-income countries. Unhealthy diet, lack of physical exercises as well as tobacco and alcohol use are the main risk factors of cardiovascular diseases. Learn more about various types of heart diseases as well as their causes, symptoms and treatments in this book.