Columbia University biochemists David Rittenberg & Rudolph Schoenheimer demonstrate that dietary cholesterol has very little effect on blood cholesterol.
"One of the early ideas for how people might lower cholesterol was simply to consume less of it. The notion that cholesterol in the diet would translate directly into higher cholesterol in the blood just seemed intuitively reasonable, and was introduced by two biochemists from Columba University in 1937. The assumption was that if we could avoid eating egg yolks and the like, we could prevent cholesterol from accumulating in the body."
-Nina Teicholz - The Big Fat Surprise - Page 23