Your heart is a powerful muscle that works every second of your life. It pumps blood filled with oxygen and nutrients to every part of your body so that your organs, muscles, and brain can work properly.
To keep doing this job, the heart also needs its own steady supply of oxygen-rich blood. This blood is delivered through special blood vessels called the coronary arteries. When these arteries become narrow or blocked, the heart cannot get enough oxygen.
This condition is called coronary artery disease, also known as CAD, and it is one of the leading causes of death around the world. Coronary artery disease usually develops slowly over many years. The problem begins when fat, cholesterol, calcium, and other substances collect inside the walls of the arteries. This build-up is called plaque.
At first, plaque may not cause any symptoms, so many people do not know that the disease is developing. As plaque becomes larger, the opening inside the artery becomes smaller, making it harder for blood to flow to the heart muscle. Sometimes the surface of the plaque breaks open. When this happens, a blood clot can form and completely block the artery.
If blood flow stops, part of the heart muscle begins to die, causing a heart attack. Because coronary artery disease often develops quietly, it is important to know the warning signs. One of the most common symptoms is chest pain or discomfort, known as angina.
People often describe it as pressure, tightness, squeezing, heaviness, or a feeling that something heavy is sitting on the chest. The discomfort may spread to the shoulders, arms, neck, jaw, or back. It often appears during exercise, climbing stairs, emotional stress, or other activities that make the heart work harder.
The pain may improve after resting, but any new, severe, or long-lasting chest pain should be assessed by a doctor immediately. Another common symptom is shortness of breath. If the heart is not receiving enough blood, it may not pump as effectively as it should.
This can leave you feeling breathless while walking, climbing stairs, doing household tasks, or sometimes even while resting or lying flat. Many people also notice that they become tired much more easily than before. Activities that once felt simple may suddenly become difficult because the heart is struggling to supply enough oxygen to the body.
Some people experience heart palpitations. This means the heart may feel as if it is racing, fluttering, pounding, or skipping beats. Although palpitations can have many causes, they may sometimes be a sign that the heart is under stress because of reduced blood flow. Not every person has the same symptoms.
Some people, especially women, older adults, and people with diabetes, may have unusual warning signs. They may feel sick to their stomach, have nausea, indigestion, heartburn, dizziness, or unexplained tiredness instead of severe chest pain. Women in particular may notice extreme fatigue for days or even weeks before a heart attack.
Breaking out in a cold sweat without obvious reason, especially together with chest discomfort or shortness of breath, is another warning sign that should never be ignored. If doctors suspect coronary artery disease, they can use several tests to examine the heart.
These may include blood tests, an electrocardiogram, an exercise stress test, ultrasound scans of the heart, CT scans, or coronary angiography, which allows doctors to look directly at the arteries. The treatment depends on how severe the blockage is. Some people can manage the condition with medicines that lower blood pressure, cholesterol, or reduce the risk of blood clots.
Others may need procedures such as angioplasty and stent placement to open narrowed arteries, or coronary artery bypass surgery to restore blood flow. The good news is that coronary artery disease is often preventable. Eating a diet rich in fruits, vegetables, whole grains, lean protein, and healthy fats can help protect the heart.
Regular physical activity, maintaining a healthy weight, avoiding smoking, limiting alcohol, managing stress, and getting enough sleep also reduce the risk. Keeping blood pressure, cholesterol, and blood sugar under good control is especially important for people with diabetes or other risk factors.
Regular health check-ups allow doctors to detect problems early, often before symptoms appear. Paying attention to your body’s warning signs and seeking medical advice quickly can make a life-saving difference.
The earlier coronary artery disease is found, the more treatment options are available to prevent heart attacks and improve long-term health. Looking after your heart today can help you enjoy a healthier future.
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