Coronary Artery Disease (CAD), also known as Coronary Heart Disease (CHD), is one of the most common types of heart disease. It occurs when the coronary arteries, which supply oxygen-rich blood to the heart muscle, become narrowed or blocked due to the buildup of fatty deposits called plaque. This process, known as atherosclerosis, gradually reduces blood flow to the heart. As the arteries become narrower, the heart receives less oxygen and nutrients, especially during physical activity or emotional stress. If a coronary artery becomes completely blocked, it can lead to a heart attack (myocardial infarction), which is a life-threatening medical emergency.
Coronary Artery Disease usually develops slowly over many years and often begins without noticeable symptoms. Many people remain unaware they have the condition until they experience chest pain or a heart attack. The disease is strongly associated with unhealthy lifestyle habits such as smoking, poor diet, physical inactivity, obesity, and excessive alcohol consumption. Medical conditions including diabetes, high blood pressure, and high cholesterol also significantly increase the risk of developing CAD. Age, family history of heart disease, and chronic stress are additional contributing factors.
Doctors diagnose Coronary Artery Disease using several tests, including an electrocardiogram (ECG), stress test, echocardiogram, coronary CT scan, coronary angiography, and blood tests to evaluate cholesterol and heart function. Early diagnosis is essential because timely treatment can reduce the risk of serious complications.
Although Coronary Artery Disease cannot always be completely cured, it can be effectively managed through lifestyle changes, medications, and medical procedures when necessary. Maintaining a heart-healthy diet, exercising regularly, quitting smoking, controlling blood pressure and cholesterol levels, and taking prescribed medications can significantly improve heart health. In severe cases, procedures such as angioplasty with stent placement or coronary artery bypass graft (CABG) surgery may be required to restore blood flow to the heart. With proper treatment and healthy lifestyle choices, many people with CAD can live active and fulfilling lives.
Coronary Artery Disease is mainly caused by atherosclerosis, the gradual buildup of cholesterol, fat, calcium, and other substances inside the coronary arteries. Major risk factors include high cholesterol, high blood pressure, diabetes, smoking, obesity, physical inactivity, unhealthy eating habits, excessive alcohol consumption, chronic stress, increasing age, and a family history of heart disease. These factors damage the artery walls over time, allowing plaque to accumulate and restrict blood flow to the heart.
Coronary Artery Disease can often be prevented by maintaining a healthy lifestyle and managing risk factors early. Eating a diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats while limiting saturated fats, salt, and processed foods helps protect the heart. Regular physical activity, maintaining a healthy body weight, avoiding smoking, limiting alcohol intake, managing stress, and getting enough sleep all contribute to better cardiovascular health. Routine medical checkups, including blood pressure, cholesterol, and blood sugar monitoring, are especially important for individuals with a family history of heart disease or other risk factors. Early detection and consistent treatment greatly reduce the risk of heart attacks and other serious cardiovascular complications.