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Heart Attacks And Its Causes Beginning of Paper For years, heart attacks have struck fear into the eyes of Americans. All cardiovascular diseases together are the widest cause of death in the country, with heart attacks alone accounting for about twenty-three percent of all fatalities (Staff,1997). Doctors have tried to reduce t .... Middle of Paper .... have levels of cholesterol that would be considered normal, and as many as one fourth of heart attacks occur in people with no known risk factors at all (Cowley, 1997). The hypothesis that high levels of cholesterol cause heart attacks may be attributed to this: LDL, or "bad" cholesterol, induces cells to produce proteins in the arterial walls of the heart and the veins leading to the heart. Macrophages eat the fatty substances in the heart and then die, causing a build up in the veins. Conventionally speaking, the blockage of LDL wo .... 950 words | 4 pages Subscription Length Price Join 30 days membership (recurring) $19.95 90 days membership (recurring) $39.95 180 days membership (non-recurring) $69.95