If you want to understand the first, take McDonalds - you probably have one and don't think it's that bad? Imagine everything on the menu is either 10 times sweeter (sickening), or made with wilted products on the cusp of expiration, and that's "standard" food.

It's so bad, many Americans hate anything "healthy" because any time they are exposed to it, it's not much better than pigs swill. So there are many who will only eat meat, because that is harder to make taste poorly, despite being even more disease riddled (there are almost no standards for meat inspection).

So then, you are constantly sick, low energy.

And then education - suffice it to say there are many communities where it is seen as "reasonable" to believe in nonsense like "flat earth", and many struggle with basic things like addition. It's a wonder we aren't illiterate too... I suppose it's too useful to be able to read about products to buy them, so we can at least all read the adverts...(for now)