Depends how you look at it. Being old, I grew up with a set of dietary guidelines before they were mostly reversed in the USA in 1970s and 1980s. Since then, most Americans have become obese. I have not.
What you're seeing now is the unraveling of a set of mistakes made in the 1970s and 1980s, and we're getting closer to what my English mother and grandmother thought.
Try reading up on John Yudkin vs Ancel Keys. Keys' 1970s "Seven Countries" study was bullshit. Yudkin was right, and was treated despicably.
That is basically, what I wanted to say: Don't go with every fad and not with every "scientific" study. Some scientists are still trustworthy of course ... but as with politicians, not everybody is a person of integrity.
What you're seeing now is the unraveling of a set of mistakes made in the 1970s and 1980s, and we're getting closer to what my English mother and grandmother thought.
Try reading up on John Yudkin vs Ancel Keys. Keys' 1970s "Seven Countries" study was bullshit. Yudkin was right, and was treated despicably.