My understanding is that any carbs that aren’t used for energy are converted and stored as fat. Hypothetically, could a human just survive off of protein and a lot of carbs?
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You [need cholesterol](https://www.youtube.com/watch?v=b7zWNabebxs) so you absolutely need fat
also saturated fatty-acids are good for building cell membranes… I wouldn’t worry much about cholesteral and saturated fatty-acids (I know the latter are not the topic but I wanted to mention them because food with a lot of cholesterol often has saturated fatty acids).
I think you could survive on carbs and proteins but it wouldn’t be healthy.
(also people who have too high cholesterol in their blood get that mostly from sugar. The book grain brain is really interesting and has a good chapter about Cholesterol. I didn’t read it in english so it’s hard for me to explain)
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