Q.How does butter in your food get digested and absorbed in the body?

Butter is essentially fat (triglycerides), so its digestion follows the general pathway for dietary fats:

Digestion

• Little or no digestion of fat occurs in the mouth. In the stomach, a small amount of digestion may occur via gastric lipase, but the acidic, non-emulsified environment makes this minor.
• The major site of fat digestion is the small intestine. Bile (from the liver, via the gall bladder) supplies bile salts, which emulsify the fat of butter into fine droplets, vastly increasing its surface area.
• Pancreatic lipase (and intestinal lipase) then hydrolyses the emulsified fat, converting triglycerides into fatty acids, glycerol, and mono-/di-glycerides.

Absorption

• Fatty acids and monoglycerides, being largely insoluble in the watery intestinal contents, are packaged together with bile salts into tiny micelles, which carry them to the brush border of the intestinal epithelial cells for uptake.
• Once inside the mucosal cells, the fatty acids and monoglycerides are re-synthesised into triglycerides, and these are combined with proteins to form small droplets called chylomicrons. …

Trace fat through the three stages: emulsification (bile salts, small intestine) → enzymatic hydrolysis (pancreatic/intestinal lipase → fatty acids + glycerol) → absorption and re-packaging (micelles → mucos …

• Saying fat is absorbed directly into blood capillaries like glucose or amino acids — it is instead absorbed via the lymphatic lacteals as chylomicrons. …