For anyone wondering if we might have evolved to be healthiest on plant based diets consider that it has only been 10 000 years since the agricultural revolution, and since then our brains are smaller, our jaws are smaller, our teeth are so crowded that many need their last teeth (wisdom teeth) removed
Archaeologists identify pre-agriculture populations by the quality of their teeth. Good teeth, no agriculture. Rotten teeth (like the modern person's, luckily we have dental treatment that ancient Egyptians would have killed for) means they had agriculture.
What did humans eat for millions of years before 8000 BCE? Animals or animals and plants.
The animal that does best on seeds (birds) lost the teeth their ancestors (raptor dinosaurs) had.
A single high efficiency wood heater can fill a valley with visible smoke. I can't believe that breathing that density of smoke can be healthy. The valley I live in is full of smoke from mid spring through to new years, I wonder how many are killed by that smoke