There are so many wrong things with that post. First of all humans have been eating meat for over 2 and a half million years. They weren't mostly vegetarian, Eating mostly just meat gave humans the ability to evolve. Eating mostly vegetation places huge pressure on the intestinal tract, so getting the majorty of calories from the fat and protein gave the digestive system a break, and more calories were able to go to the brain. Eating meat allowed humans to move away from the forests and into areas were they wouldn't have been able to survive on just vegetation. So humans definately evolved on a mostly meat/fat diet.
Secondly, you told him to eat little fat and 150g of carbs. So he will only be eating 600-1000 with protein. So he definatelly needs fat aswell, if someone eats just carbs and no fat their blood sugar will rise and they will feel hungrier, not fuller. Carbs release insulin, and insulin stores carbs and fats as fat, so if he over-eats he will still gain weight. Insulin also stops fat from escaping from the fat stores, making it harder to lose weight. I do agree on eating carbs and fats, i eat atleast 100g of carbs a day, but still eat mostly fat and protein.
It seems like you are new to this, or just guessing with a lot of that information.



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