Ancel Keys
He showed studies that saturated fats is the reason why heart disease is rising despite getting the results by cherrypicking the data. He has criticized some work against sugars, one example in which:It is clear that Yudkin has no theoretical basis or experimental evidence to support his claim for a  major influence of dietary sucrose in the etiology of CHD;  his claim that men who have CHD are excessive sugar eaters is nowhere confirmed but is disproved by many studies superior in methodology and/or magnitude to his own; and his  "evidence"  from population statistics and time trends will not bear up under the most elementary critical examination.  But the propaganda keeps on reverberating ...