Protein bars containing non-digestible oils like HPG are considered negative foods because they can deplete nutrients.

“So, there are these non-digestible oils and they're using this oil in it. I think it's called HPG. So, it's basically that oil with the protein. It's like basically it's like an it's like a really shitty literally oil that gives you a good mouth feel with the bar, but you don't digest it. And because these oils are not digested like ostra and HPG, they pull fats soluble vitamins from your body and then you actually can get lower levels of vitamin A and vitamin K or vitamin E and D.”