e modification of risks for disease, and improvements in the diagnosis and treatment. At mid-20th century blood vessel and heart diseases accounted for approximately one-third of the deaths in the western world.
             There are many risk factors for heart disease. A family history of coronary artery disease is a leading risk factor. There are many risks for coronary artery disease, which include smoking and high-cholesterol which are major factors. Obesity, hypertension, and diabetes mellitus have proven to also have harmful effects.
             There are many types of treatments for many types of heart diseases. An angioplasty is one type of treatment. This is the surgical repair of a blood vessel, either by inserting a balloon tipped catheter to unblock it, or by reconstructing or replacing part of the vessel. A procedure known as cardiomyoplasty is now undergoing clinical trials, or tests, in the United States for the treatment of select patients with endst
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