ELi5: if “Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram”, why are carbs evil?

Question

why are Carbs considered ‘fattening’ when they have the same caloric count as proteins ?

In: Other

Answer 1

So carbs, protein, and fats are all organic compounds but they each require different time and energy to digest it for use in the body.

Simple carbs are readily accessible and require maybe a few steps before your body is using it.

Complex carbs takes a dozen steps more than the simple carbs.

Protein will require a couple dozen more steps than complex carbs as it takes awhile to break down all that amino acid to usable forms.

Fats take a couple dozen steps to breakdown but not much more than protein and has to wait for carbs or protein to be used first.

My explanation isn’t solidly scientific but is a framework for how to differentiate between these compounds.
If you think of each step as time or energy required before use, then you get the idea of these compounds giving you varying calories per hour rates.