You mean like the scientists and doctors who for DECADES claimed a diet low in fat was "heart healthy" and diets high in saturated fats and cholesterol would lead to heart disease, only for that to be rescinded in the last few years?

There are interesting parallels between oil companies meddling in climate science and certain food industries (particularly soda companies) doing the same thing in nutrition science.

I'd recommend you need to review the rules of HN. Would save you from downvotes!