The short-term effects that alcohol has on the cardiovascular system depends on how much alcohol is consumed. Low consumption of alcohol increases one's heart rate and blood pressure. However, high consumption decreases one's heart rate and blood pressure and can cause heart rhythms to become irregular. Long-term effects of alcohol include high blood pressure, enlarged heart, and damage to heart muscles. Two preventive measures people could take to avoid these effects are to abstain from drinking alcohol or minimizing the amount of alcohol one drinks.