> Nutrition is run on fads - see whole fitness and healthy food bullshit.

You raise an interesting point. I watched a YouTube video recently of someone walking around a large US supermarket pointing out all of the processed foods that now claimed to be high protein. It is nuts!

I wonder what will come after the protein boom? My guess: Fiber is back because you need to "fibermaxx" when taking GLP-1 antagonists. I can remember some of the funny adverts in the 1980s of old people taking fiber supplements to "stay regular". (See SNL comedy skit "Colon Blow" for a good laugh.)