According to the National Institute of Health, coronary heart disease is the most common type of heart disease and is the leading cause of death in the U.S. for both women and men. Coronary heart disease is a condition in which plaque builds up inside the coronary arteries, arteries that supply your heart muscle with oxygen. As the plaque builds up it narrows the coronary arteries and reduces the blood flow to the heart. There is also an increased chance of blood clots forming that can partially or completely block the blood flow. Coronary heart disease results from atherosclerosis of the coronary arteries. Repeated damage will result in hardening of the arteries.
Smoking causes coronary heart disease by damaging the arteries which causes plaque buildup in the arteries (the bodies attempt to heal itself). The longer you smoke the more damage is done. You can reduce your chances of coronary heart disease by making healthy lifestyle changes such as quitting smoking, healthy eating, regular exercise, and stress management.