Source? You may actually be thinking of the lipid hypothesis (https://en.wikipedia.org/wiki/Lipid_hypothesis https://en.wikipedia.org/wiki/Lipid_hypothesis) tha

Source? You may actually be thinking of the lipid hypothesis (https://en.wikipedia.org/wiki/Lipid_hypothesis https://en.wikipedia.org/wiki/Lipid_hypothesis) that Ancel Keys developed. As I gather, we still believe that red meat consumption leads to heart disease, but we're becoming less sure of his hypothesis that the elevated cholesterol resulting from saturated fat (found in red meat) causes heart disease.