<P> Ways to reduce CAD risk include eating a healthy diet, regularly exercising, maintaining a healthy weight, and not smoking . Medications for diabetes, high cholesterol, or high blood pressure are sometimes used . There is limited evidence for screening people who are at low risk and do not have symptoms . Treatment involves the same measures as prevention . Additional medications such as antiplatelets (including aspirin), beta blockers, or nitroglycerin may be recommended . Procedures such as percutaneous coronary intervention (PCI) or coronary artery bypass surgery (CABG) may be used in severe disease . In those with stable CAD it is unclear if PCI or CABG in addition to the other treatments improves life expectancy or decreases heart attack risk . </P> <P> In 2015 CAD affected 110 million people and resulted in 8.9 million deaths . It makes up 15.9% of all deaths making it the most common cause of death globally . The risk of death from CAD for a given age has decreased between 1980 and 2010, especially in developed countries . The number of cases of CAD for a given age has also decreased between 1990 and 2010 . In the United States in 2010 about 20% of those over 65 had CAD, while it was present in 7% of those 45 to 64, and 1.3% of those 18 to 45 . Rates are higher among men than women of a given age . </P> <P> Chest pain that occurs regularly with activity, after eating, or at other predictable times is termed stable angina and is associated with narrowings of the arteries of the heart . </P> <P> Angina that changes in intensity, character or frequency is termed unstable . Unstable angina may precede myocardial infarction . In adults who go to the emergency department with an unclear cause of pain, about 30% have pain due to coronary artery disease . </P>

This term is used to describe the first stage of coronary heart disease