Can macronutrients be absorbed through the mucosa of the mouth?

Yes, some macronutrients can be absorbed through the mucosa of the mouth, although this is not the primary site for nutrient absorption. Certain simple sugars, like glucose and fructose, can be absorbed directly through the oral mucosa. However, the majority of macronutrient absorption occurs in the intestines, where enzymes break down carbohydrates, proteins, and fats into smaller molecules that can be absorbed more efficiently.