You may wake up feeling perfectly fine, with no signs of illness, but your arteries may already be partially blocked and your heart under silent pressure. Blocked arteries often don’t show symptoms until a serious event occurs—such as a heart attack or stroke.
Cardiovascular diseases are responsible for nearly 18 million deaths worldwide each year, mainly affecting people unaware of their danger.
Being aware of the following nine symptoms — some of which may seem minor or unrelated — can help you spot problems early and possibly save your life.
1. Chest pain or discomfort
One of the most common warning signs is pressure, tension, or discomfort in the chest, known as angina pectoris.
This is usually caused by atherosclerosis, where plaque made up of fats, cholesterol, and calcium builds up inside the artery walls. As the plaque hardens and narrows the arteries, it restricts blood flow to the heart.
When the heart does not receive enough oxygen — especially during physical or emotional stress — it triggers pain that can spread to the neck, shoulders, back, or arms.
This pain is not relieved by antacids and tends to appear during activity and subside with rest. In some cases, a ruptured plaque can cause a clot and lead to a heart attack. Never dismiss chest pain without proper investigation.
2. Unusual shortness of breath
Having difficulty catching your breath after light exertion, such as climbing stairs, may indicate insufficient oxygen circulation due to narrowing of the arteries.
A heart has difficulty keeping up with demand, and this can even cause stressed breathing difficulties when resting or lying down.
In advanced stages, people may wake up at night wasting or need to sleep propped up. This signals that the heart is struggling to deliver enough blood, even to the lungs.
3. Chronic, unexplained fatigue
