What macronutrients are not absorbed by your body?

The macronutrients that are not absorbed by the body are dietary fiber and certain forms of resistant starch. While fiber aids in digestion and promotes gut health, it passes through the digestive system largely intact, contributing to bulk and regularity rather than providing calories. Resistant starch also resists digestion in the small intestine, reaching the colon where it can be fermented by gut bacteria. Both play important roles in overall health despite not being absorbed for energy.