No kidding. Nutrition, health, history and psychology seem to be making a lot of course corrections. Unless it's physics or math, I get ticked off any more when I read "now we know..."
Case in point, back in my bio days I worked in a lab that published an article on CBD knockdown of metastatic cancer genes in cell cultures. Mainstream news organizations picked it up and published it as "Smoking pot cures cancer" pieces, which was not at all what our research even touched on.