Nutrient absorption is the vital process where digested food molecules pass from the digestive tract (mainly the small intestine) into the bloodstream and lymphatic system, providing the body with energy, growth, and repair materials. This involves breaking down food into simple sugars, amino acids, fatty acids, vitamins, and minerals, which then cross the intestinal lining (via villi) into blood capillaries (for water-soluble items) or lymph vessels (for fats) to be distributed throughout the body.
