A heart attack is a blockage of the blood vessels, which nourish the heart and contaminate the tissues that make up the heart. Damage or blockage of blood vessels due to high cholesterol is one of the causes of heart attack. Of those who have a heart attack, 60% are men. Smoking, alcoholism, lack of physical activity, stress and high blood pressure accelerate the onset of this disease. Symptoms: sensation of pain in the area behind the breastbone ...