Medical researchers have long disagreed bitterly over the cause of atherosclerosis (the most dangerous form of hardening of the arteries, which leads to heart attacks). Last week, thanks to some technically brilliant work at the University of California, the end of the disagreement seemed to be in sight.
In atherosclerosis, the inner walls of the arteries become clogged with fatty material. Part of this is cholesterol, a white, soapy-feeling substance (actually an alcohol) found in all animal fats, nerve tissues and egg yolk. Some doctors insisted that the cholesterol was the villain: there...
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