This formation of blood clot is called trombosis and the clot itself is known a thrombus. The term coronary heart disease is usually applied to diseases of the heart secondary to defective or interrupted supply of blood to the heart muscles through the coronary arteries. When this happens. Blood pressure inside the arteries tends to become high and which in its wake puts more stress and strain on heart. Recent researches in connection with heart diseases have demonstrated a high correlation between fats in the diet, cholesterol level and atherosclerosis.
Cholesterol is fat like substance found in animal fats, oils and some tissues of the human body.
It has been said earlier that any disturbance in the supply of blood to heart muscle leads to its functional impairment. It will be useful to discuss here such factors, which may lead to disturbances in the supply of blood to heart muscles. Certain conditions increase the strains on the heart. Among these are lack of rest, over exertion or prolonged hard labor which create an excessive body demand for oxygen that the heart, muscle must supply through pumping more blood. Other indirect factors that may result in causing disturbance in blood supply are indigestion of food, anger and other emotional excitements.