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Left Main Coronary Artery Disease is a serious heart condition in which the left main coronary artery becomes narrowed or blocked due to the buildup of fatty deposits called plaque. This artery supplies blood to a large portion of the heart muscle through its two major branches, making any obstruction potentially life-threatening. Reduced blood flow can cause chest pain (angina), shortness of breath, fatigue, dizziness, or even a heart attack.

Common risk factors include high blood pressure, high cholesterol, diabetes, smoking, obesity, a sedentary lifestyle, and a family history of heart disease. Diagnosis typically involves electrocardiography (ECG), stress testing, echocardiography, coronary CT angiography, or coronary angiography to determine the severity of the blockage.

Treatment depends on the extent of the disease and the patient's overall health. Lifestyle modifications, heart-healthy nutrition, regular physical activity, and medications to control blood pressure, cholesterol, and blood clotting are often recommended. In cases of significant blockage, coronary artery bypass grafting (CABG) or angioplasty with stent placement may be required to restore adequate blood flow. Early diagnosis and timely treatment are essential to reduce complications, preserve heart function, and improve long-term survival. Regular follow-up with a cardiologist and strict management of cardiovascular risk factors help prevent disease progression and support better heart health.