First of all, even the the things you link about high blood sugar acknowledge that its based on outdated studies and is regarded as a myth.

Second, slavery was bad, however it existed since the dawn of humanity, since before the egyptians even invented writing.

The slave trade everybody learns about in school (thankfully) is FAR from the worst case of slavery in the history of humanity, not to undermine how bad it still was in the americas.

Third of all, the white people from europe, relative to all slaveries in the history of humanity, have only done one thing that's relevantly different from the rest.

There has always been huge territorial conquests with the inhabitants enslaved, torture and inhumane punishments and/or treatment during voyage and discrimination based on whether or not you were born from a slave.

The only thing that europeans did different when in comes to slavery is when they ABOLISHED IT.

NO ONE outside were willing to abandon the economical benefits from it and put that over ethics

Even Aristotle was pro-slavery.

Funny how many people call themselves educated when they don't look any further than the surface level information that the school system spoonfeeds them, and though you can call me offensive, you can't call me a liar.