Coronary Artery Disease
What is Coronary Artery Disease?
Coronary artery disease happens when the blood vessels that supply your heart muscle become narrow or blocked. This narrowing usually occurs from plaque buildup inside the artery walls. Plaque is made of cholesterol, fat, calcium, and other substances found in your blood.
As plaque builds up over time, it reduces blood flow to your heart. Your heart needs oxygen-rich blood to work properly. When blood flow is reduced, your heart may not get enough oxygen. This can cause chest pain, shortness of breath, or even a heart attack.
Coronary artery disease develops slowly over many years. Many people have no symptoms in the early stages. That is why regular testing of key biomarkers is important for catching problems before they become serious. Early detection allows you to make lifestyle changes and start treatment that can prevent heart attacks and other complications.
Symptoms
- Chest pain or discomfort, especially during physical activity or stress
- Shortness of breath during exercise or daily activities
- Fatigue and feeling tired more easily than usual
- Pain in the neck, jaw, shoulders, or arms
- Rapid or irregular heartbeat
- Dizziness or lightheadedness
- Nausea or indigestion-like discomfort
- Weakness or cold sweats
Many people with coronary artery disease have no symptoms in the early stages. The disease can progress silently for years before causing noticeable problems. This makes blood testing and regular check-ups critical for early detection.
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Causes and risk factors
Coronary artery disease develops when cholesterol and other substances build up in the artery walls. This process is called atherosclerosis. High levels of LDL cholesterol in your blood increase the risk of plaque formation. Inflammation in the arteries also plays a key role in plaque buildup and instability. Myeloperoxidase is an enzyme that signals inflammation and unstable plaque in arteries.
Risk factors include high cholesterol, high blood pressure, smoking, diabetes, obesity, and lack of physical activity. Family history of heart disease increases your risk. Stress and poor diet also contribute to arterial damage. Age is a factor too, with risk increasing after 45 for men and after 55 for women. Managing these risk factors through lifestyle changes and medical care can significantly reduce your chances of developing coronary artery disease.
How it's diagnosed
Doctors diagnose coronary artery disease using your medical history, physical exam, and various tests. Blood tests play a crucial role in identifying risk factors before symptoms appear. Tests for LDL cholesterol and its subtypes show how much plaque-forming cholesterol is in your blood. Advanced lipoprotein testing breaks down cholesterol into particle sizes to reveal more detailed risk. Myeloperoxidase levels indicate inflammation and unstable plaque in your arteries. B type natriuretic peptide helps assess heart strain and function.
Rite Aid offers testing for key biomarkers that detect coronary artery disease risk. Our annual blood testing panel includes LDL cholesterol, lipoprotein fractionation, myeloperoxidase, and BNP. These tests help you and your doctor understand your cardiovascular health and catch problems early. Additional tests like EKG, stress tests, or coronary angiography may be needed to confirm diagnosis and assess severity.
Treatment options
- Eat a heart-healthy diet rich in vegetables, fruits, whole grains, and lean proteins
- Reduce saturated fats, trans fats, and dietary cholesterol to lower LDL levels
- Exercise regularly, aiming for at least 150 minutes of moderate activity per week
- Quit smoking and avoid secondhand smoke exposure
- Maintain a healthy weight to reduce strain on your heart
- Manage stress through meditation, yoga, or other relaxation techniques
- Take prescribed medications such as statins to lower cholesterol
- Use blood pressure medications if you have hypertension
- Consider aspirin therapy if recommended by your doctor to prevent clots
- Follow up with regular blood tests to monitor cholesterol and inflammation markers
- In advanced cases, procedures like angioplasty, stenting, or bypass surgery may be needed
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Frequently asked questions
The main cause is plaque buildup in the arteries that supply blood to your heart. This plaque is made of cholesterol, fat, and other substances. Over time, it narrows the arteries and reduces blood flow to your heart muscle.
While existing plaque cannot be completely removed, progression can be slowed or stopped. Aggressive lifestyle changes and medications can stabilize plaque and even reduce it slightly. Early detection and consistent management are key to preventing further damage and avoiding heart attacks.
LDL cholesterol tests show how much artery-clogging cholesterol is in your blood. Lipoprotein fractionation provides detailed particle analysis for better risk assessment. Myeloperoxidase indicates inflammation and unstable plaque, while BNP measures heart strain. These biomarkers help identify disease risk before symptoms appear.
Most adults should have cholesterol checked every 4 to 6 years starting at age 20. If you have risk factors like diabetes, high blood pressure, or family history, you may need testing annually. Your doctor can recommend a testing schedule based on your individual risk profile.
Early stages often have no symptoms, which is why regular blood testing is so important. As the disease progresses, you may notice chest discomfort during activity, shortness of breath, or unusual fatigue. Any chest pain or pressure should be evaluated by a doctor immediately.
Family history does increase your risk, especially if close relatives had heart disease before age 55 for men or 65 for women. However, lifestyle factors like diet, exercise, and smoking play an even larger role. Even with a family history, healthy habits can significantly reduce your risk.
LDL cholesterol is often called bad cholesterol because it builds up in artery walls and forms plaque. HDL cholesterol is called good cholesterol because it helps remove excess cholesterol from your arteries. High LDL and low HDL both increase coronary artery disease risk.
Diet is a powerful tool but may not be enough on its own for advanced disease. A heart-healthy diet can lower cholesterol and reduce inflammation significantly. However, many people also need medications like statins to reach target cholesterol levels and prevent complications.
Myeloperoxidase is an enzyme released during inflammation in your arteries. High levels suggest that plaque in your arteries may be unstable and more likely to rupture. Unstable plaque is dangerous because it can cause blood clots that lead to heart attacks.
See a doctor immediately if you have chest pain, shortness of breath, or other warning signs. Even without symptoms, see a doctor if you have risk factors like high cholesterol, diabetes, or family history. Regular check-ups and blood testing help catch problems early when treatment is most effective.