The anus may have evolved from a hole originally used to release sperm

But whose sperm are we talking about here?

From this summary, The American Health Association still has a very modest recommendation to avoid excessive dietary cholesterol but no longer recommends a daily limit, and notes that foods high in cholesterol tend to be high in saturated fat, which does still show a link to serum cholesterol.

In other words, foods that are high in cholesterol but low in saturated fat (like shellfish, and to some degree eggs) are still fine.

I’d trust the American Heart Association over a video by a doctor who advocates for veganism through his books and media appearances. He seems to me to be more of an advocate (and isn’t very open about the fact that nutritionfacts.org is his own marketing website for promoting his specific products). And his books rely partially on data now known to be faulty, about “blue zones” where lots of people live past 100 (turns out each are hotspots for pension fraud so it’s hard to actually know how old people actually live in those places).

Is this the first use of “mex-sickos”? Literally laughed out loud.

Pliny believed that elephants knew enough to kneel for human kings, or to point out directions to lost travelers.

Not a reliable source, if this claim can even be found in his works.

While we humans eat a lot, something like 50% of our calories are going to our brains.

I don’t think that’s right.

This article says that about 20% of an adult human male’s resting energy expenditure goes towards supporting the brain’s metabolism. Obviously for more active people, the higher denominator of total energy expenditure will mean an even lower percentage of energy being used for the human brain.

Flying is energetically expensive to start doing, but pays off in efficiency once an animal moves a far enough distance. How many calories does a goose need to consume to fly 4000 km, and how does that compare to terrestrial species like deer or wolves?

Birds have to use almost all of their available calories on flying.

But flying is quite energy efficient as a method of getting from point A to point B. That’s why flying insects and birds have had such evolutionary success with that strategy.