The force that blood flow exerts against the walls of the blood vessels is termed as blood pressure. It is measured by the amount of blood the heart pumps as well as the amount of resistance to blood flow in the arteries. Blood pressure rises when the heart pumps more blood and the arteries are comparatively narrower. High blood pressure is known as hypertension. It can lead to cardiovascular diseases such as stroke, heart attack, heart failure, aneurysm, and sometimes death. It can be broadly categorized into two types, namely, primary and secondary hypertension. Primary hypertension develops over time with age whereas secondary hypertension can be caused due to another medical condition or use of certain medicines. This book brings forth some of the most innovative concepts and elucidates the unexplored aspects of hypertension. It includes some of the vital pieces of work being conducted across the world, on various topics related to this condition. This book will serve as a reference to a broad spectrum of readers.