We know for certain that Seth had coronary artery disease. How? Because he had a non-zero score on his coronary CT scan. It is not normal to have calcified coronary arteries -- at any age. It may be so common as to be the statistical norm, but coronary calcification is never physiologically normal. Coronary artery disease is responsible for about half of all deaths in the United States. Seth may have had "quality health cover," but we know he still developed coronary disease. Remember, too, that sudden unexpected death is the first symptom in 20% of cases of coronary artery disease. This is a terrible problem that the field is working hard to solve.