> we know eating red meat is bad for you. We know that a balanced diet favoring vegetables is good for you
What do we know, exactly? Because we've known lots of stuff that turns out to be bunk. And I am seeing increasing evidence that a one-size-fits-all diet isn't healthy - some people will need more or less of different things, or to abstain entirely from categories.
Not saying this is a good idea - but It's hard to say to what degree it isn't.