Coronary Artery Disease
Medically reviewed by: Dr. Theodoros Barlogiannis, CardiologistLast updated: 7 April 2026
Coronary artery disease develops when the coronary arteries that supply blood to the heart muscle narrow due to atherosclerotic plaque. The typical symptom is chest pain or tightness on exertion (angina) that eases with rest. Often, however, it progresses silently for years and is detected through preventive cardiac screening.
Coronary Artery Disease is a common but dangerous cardiovascular condition that affects millions of people worldwide. It occurs when the arteries supplying blood to the myocardium (coronary arteries) become narrow or blocked, leading to reduced blood flow and potentially severe complications.
What are the causes of Coronary Artery Disease?
- Atherosclerosis: The primary cause of coronary artery disease is atherosclerosis, a process where fatty plaques (atheromas) form on the inner walls of the coronary arteries. Over time, these plaques can restrict blood flow, leading to cardiovascular problems.
- Hypertension: High blood pressure accelerates the development of atherosclerosis. Managing blood pressure through lifestyle changes and medications is crucial for preventing CAD.
- High Cholesterol: Excessively high levels of LDL cholesterol (commonly known as "bad" cholesterol) can contribute to the formation of atherosclerotic plaques. Controlling cholesterol levels through diet, exercise, and medications is critical for preventing coronary events.
- Diabetes: Uncontrolled diabetes plays a crucial role in the creation of atherosclerotic plaques in the heart's vessels.
- Smoking: Smoking is a significant risk factor for coronary artery disease. The chemicals in cigarettes can damage the surface of blood vessels, making them more vulnerable to atherosclerosis.
- Obesity and Inactivity: Excessive weight and insufficient physical activity can contribute to the development of coronary artery disease.
- Family History: Individuals with a family history of cardiovascular diseases may have a genetic predisposition to developing coronary artery disease.
What are the symptoms of Coronary Artery Disease?
- Angina: Angina is the most common symptom of coronary artery disease and can manifest as pain, pressure, or a feeling of tightness.
- Dyspnea: Shortness of breath can occur during physical activity or even at rest, often serving as a warning sign of reduced blood flow to the myocardium.
- Fatigue: Feeling unusually tired, even after periods of rest.
- Tachycardia: Sensation of rapid, strong heartbeats.
- Arrhythmia: Sensation of irregular heartbeats or fluttering.
Managing Coronary Artery Disease
- Lifestyle Changes: Adopting a healthy lifestyle is crucial, including a balanced diet, regular exercise, quitting smoking, and stress reduction.
- Medication: Various medications may be prescribed to manage coronary artery disease. Medication aims to improve survival and alleviate symptoms.
- Regular Monitoring: Regular check-ups and monitoring of blood pressure, cholesterol levels, and other relevant indicators are essential for managing coronary artery disease.
Understanding Coronary Artery Disease is vital. While it is a serious condition, it is largely preventable through lifestyle changes and early intervention. Knowledge of risk factors and taking preventive measures for heart health can lead to greater protection. If you have concerns about coronary artery disease, consult a cardiologist for personalized guidance and care.
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Frequently Asked Questions
What are the symptoms of coronary artery disease?
The characteristic symptom is angina: tightness, heaviness or pain in the chest that appears on exertion, in cold weather or after a meal and eases with rest. It may be accompanied by breathlessness or easy fatigue. In a number of patients, particularly those with diabetes, the disease remains symptomless.
How is coronary artery disease diagnosed?
Assessment starts with history, clinical examination and an electrocardiogram, and continues with cardiac ultrasound and an exercise stress test or stress echo. Depending on the findings and risk profile, further imaging or invasive testing may be needed, as determined by the cardiologist.
Can coronary artery disease be prevented?
To a large extent, yes. Stopping smoking, controlling blood pressure, cholesterol and blood sugar, regular exercise, a Mediterranean diet and maintaining a healthy weight substantially reduce risk. Regular preventive screening identifies risk factors early, before symptoms appear.
What is the difference between angina and a heart attack?
In angina, a narrowing temporarily limits blood flow during exertion; the pain lasts a few minutes and eases with rest, without permanent damage. In a heart attack, flow is completely blocked, the pain is prolonged and does not ease, and heart muscle dies — this requires calling emergency services immediately.
The information above is educational and does not replace medical advice.
This information is for educational purposes. Please consult your cardiologist for personalized evaluation.