Causes and effects of heart attack
heart attack occurs when the flow of blood to the heart is blocked. The blockage is most often a buildup of fat, cholesterol and other substances, which form a plaque in the arteries that feed the heart (coronary arteries). The plaque eventually breaks away and forms a clot. The interrupted blood flow can damage or destroy part of the heart muscle. Causes of heart attack The following factors are associated with increased risk of a heart attack: Age: Heart attacks are more likely when a man is over 45, and when a woman is over 55. Angina: This causes chest pain due to lack of oxygen or blood supply to the heart. High cholesterol levels: These can increase the chance of blood clots in the arteries. Diabetes: This can increase heart attack risk. Diet: For example, consuming large quantities of saturated fats can increase the likelihood of a heart attack. Genetics: A person can inherit a higher risk of heart attack. Heart surgery: This can lead to a heart attack