[PA Engineer]

But too much protein is what is making us fat and sick.

That one came all the way from the elbow. Sounds like you rewrote The Krebs Cycle. I bet you get a Nobel Prize for that.

There are essential fats, essential proteins, essential minerals, but there is no such animal as an essential carbohydrate.

[RichardMoore]

Apparently the study you are referring to, said that we need 10 essential amino acids. But it was done on rats, we need 8 and you can get them from a plant based diet. You can live on potatoes. Maybe a little meat won’t kill you, after all most people the world over don’t eat much meat, certainly not as much as we Americans.

[FatherofFive]

there is no such animal as an essential carbohydrate

So true. You can't get sulfur and B vitamins from grains.