I totally get why nutritional science feels like a seasonal thing to you, but it's actually quite simple: every species has a species-specific diet, and, as I point out throughout the article, humans are no exception.

Basically, as Michael Arnstein put it: "I don’t consider bread, pasta, grains, beans, pizza, animal based foods, as foods, they all need tremendous processing to be ‘food’ and inevitably we see that these things cause problems for our health."

If you're wondering why all of this isn't common knowledge then, I suggest you watch the documentary "What the Health" (spoiler alert: it's largely because of corruption).