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Teens using AI meal plans could be eating too few calories — equivalent to skipping a meal
(www.frontiersin.org)
this post was submitted on 15 Mar 2026
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Carbohydrates are required to break down proteins and fats. They're very much an essential nutrient, just not in the quantities the old food pyramid would have you believe.
If carbs weren't essential, a pure protein and fat diet wouldn't outright kill you from kidney failure.
You're confidently incorrect. You don't need to eat carbohydrates to break down fat and protein, and a diet consisting of healthy proteins and fat has not been proven to cause kidney failure.
Actually.... High protein diets can cause de novo kidney disease. De novo means it's causal, from the new. Out of nowhere! Not even with pre-existing conditions, although if you have those pre-existing conditions then this applies even more.
I'm not aware of any direct links to kidney disease from dietary fat. But extremely high protein has strong causal links to de novo (along with comorbidities) kidney disease.
I'm not suggesting that you overdose on protein, if you're referring to rabbit starvation. If you aren't, would you care to provide more information?
Your body can synthesize all the carbohydrates it needs through gluconeogenesis. There are no "essential carbs" the way there are essential fatty acids and amino acids. You can absolutely live on a diet of just fats and protein - and plenty of people do. The Inuit mostly did, and so do folks on carnivore diets today.
It might not be the healthiest long-term option, but it won't kill you from a lack of carbs. You're probably thinking of "rabbit starvation" which happens when you eat too much protein and not enough fat.
Braindead comment.
I say that because brains demand carbs to function optimally.
Sure. You're gonna survive. But you'll have brainfog and your red blood cells aren't gonna be happy either.
Plus you need micros....
Don't get me twisted. IMO, you gotta balance your diet. Extremes aren't doing you any favors.
The human brain can use ketones for its requirements, and your body is able to produce all the carbohydrates it needs via gluconeogenesis. Including the needs of all your erythrocytes.
Your position isn't an informed one. A quick pubmed search on ketogenic diets and cognition shows improved and protective benefits.