Comment by fc417fc802
3 days ago
GP was talking specifically about calories, not other nutrients. My impression is when a vegetable provides significant calorie content it tends to be in the form of carbohydrates.
You have to get your calories (ie raw energy) from somewhere. If you limit saturated fat to 10% then what's left for the other 90% is (roughly speaking) unsaturated fat, simple sugars, carbohydrates (ie complex sugars), and protein. In terms of long term habits converting protein to calories is probably not a great choice for your health. If you decide to go for complex carbohydrates over various oils then vegetables that provide those are a good option.
People are on ketogenic diets for years and even decades with no adverse affects. There's nothing wrong with getting energy from other sources, your body can manage it fine.
Ketogenic diets are high fat. I suggested that a diet where the bulk of your calories comes from protein (not lipids, carbohydrates, or simple sugars) was probably not great for your health.
Your body can certainly "manage" on a high protein low fat low carb diet but I don't understand it to be good for you.