Publisher's Synopsis
Introduction to Heart Disease
Heart disease is a general term used to describe a variety of conditions that affect the heart. These conditions can range from heart attacks and stroke to heart failure and arrhythmias (irregular heartbeats).
While heart disease has become one of the leading causes of death globally, it is often preventable or manageable with the right lifestyle changes and medical interventions. This chapter provides an introduction to heart disease, its global impact, and why prevention and reversal are so important.
What is Heart Disease?
At its core, heart disease refers to any condition that impairs the normal function of the heart. There are several types of heart disease, with the most common being coronary artery disease (CAD).
This condition occurs when the arteries supplying blood to the heart muscle become narrowed or blocked due to a buildup of fatty deposits, commonly known as plaque. As a result, the heart receives less oxygen and nutrients, which can lead to chest pain (angina), heart attacks, or even heart failure.
Heart disease can also include:
Heart Failure: When the heart is unable to pump blood efficiently to meet the body's needs, it can lead to fatigue, fluid retention, and shortness of breath.
Arrhythmias: These are irregular heartbeats that may cause dizziness, fainting, or even life-threatening conditions such as sudden cardiac arrest.
Valvular Heart Disease: This occurs when one or more of the heart's valves don't function properly, affecting the flow of blood through the heart.
Congenital Heart Defects: These are heart conditions present at birth and can range from mild to severe.
Stroke: While a stroke affects the brain, it often results from issues related to heart disease, particularly the buildup of plaque in the arteries that supply blood to the brain.
