hashable

> your body needs a fair amount of carbs every day,

I think you're mistaken. Carb is the only macronutrient that is not required. The body can make glucose via gluconeogenesis. Take someone who has not eaten a single carb for a month and measure their blood glucose level and you will find a stable 90mg/dL. This is why Type-1 diabetics still need insulin (although much much lesser than otherwise) in spite of being on zero-carb diets.

Except for the fact that carbs are the only macronutrient that are not essential and can be completely synthesized by the body via gluconeogenesis. There are essential amino acids that need to be sourced via food (protein). There are essential fatty acids that need to be sourced via food (fat). There are no essential carbs.