Eat all you want, your body will take up the calories it needs, and discard the rest.
I don't think human physiology has a reliable way to simply expel excess calories in real time.
Urine should be free of carbohydrates. Glucose expelled into urine = Diabetes.
Protein in urine is similarly considered to be pathologic and an early sign of kidney failure.
AFAIK, there isn't a smart or variable regulation of nutrient absorption at the level of the small intestine. The gut just cleaves whatever it can into it's most basic building blocks of carbs/protein/fats with enzymes and dumps the smallest nutrient molecules into the bloodstream for other metabolic systems to sort out later.
Fecal waste from the large intestine compromises mostly undigestible components of food like dietary fibre. I don’t believe calories can be excreted this way.
I don't think human physiology has a reliable way to simply expel excess calories in real time.
Urine should be free of carbohydrates. Glucose expelled into urine = Diabetes.
Protein in urine is similarly considered to be pathologic and an early sign of kidney failure.
AFAIK, there isn't a smart or variable regulation of nutrient absorption at the level of the small intestine. The gut just cleaves whatever it can into it's most basic building blocks of carbs/protein/fats with enzymes and dumps the smallest nutrient molecules into the bloodstream for other metabolic systems to sort out later.
Fecal waste from the large intestine compromises mostly undigestible components of food like dietary fibre. I don’t believe calories can be excreted this way.