What causes heart attack?
Answers
Answer:
Heart attacks are caused by the blood supply to the heart being suddenly interrupted. Without this supply, heart muscles may be damaged and begin to die.
Without treatment, the heart muscles will experience irreversible damage.
If a large portion of the heart is damaged in this way, the heart stops beating (known as a cardiac arrest), resulting in death.
Coronary heart disease (CHD) is the leading cause of heart attacks. CHD is a condition in which the coronary arteries (the major blood vessels that supply the heart with blood) become clogged with deposits of cholesterol. These deposits are called plaques.
Before a heart attack, one of the plaques ruptures (bursts), causing a blood clot to form at the site of the rupture. The clot may block the supply of blood to the heart, triggering a heart attack.
Your risk of developing CHD is increased by:
smoking
a high-fat diet
diabetes
high cholesterol
high blood pressure (hypertension)
being overweight or obese
Credits : NHS, United Kingdom
A heart attack occurs when one or more of your coronary arteries becomes blocked. Over time, a buildup of fatty deposits, including cholesterol, form substances called plaques, which can narrow the arteries (atherosclerosis). This condition, called coronary artery disease, causes most heart attacks.
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