Ancel Keys confirmed that dietary cholesterol was not a problem as early as the 1950s. One of the preeminent nutritional researchers of his era, he fed human subjects increasing amounts of cholesterol to see if there was any resulting increase in blood cholesterol levels. There was not. His Seven Countries Study, one of the largest epidemiological studies of diet and nutrition ever done, also established that eating cholesterol does not raise blood cholesterol. As dietary cholesterol was acquitted, dietary
