Maybe if we think of it from the perspective of humans being biological herbivores/frugivores that adapted to eating meat/dairy out of a survival mechanism the low vitamin A stuff makes sense since we aren’t like a cat that has the metabolism to process large amounts of vitamin A
“To say that humans have the anatomical structure of an omnivore is an egregiously inaccurate statement. The great taxonomist Carolus Linnaeus, (1707-1778), a Swedish naturalist and botanist who established the modern scientific method of classifying plants and animals, classified humans not as carnivores, not as omnivores, nor even as herbivores, but as frugivores. Linnaeus writes: “Man’s structure, internal and external compared with that of the other animals, shows that fruit and succulent vegetables are his natural food.”
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