What is the advantage of medium-chain triglycerides (MCTs) in fat malabsorption?

• A. They require pancreatic enzymes for digestion
• B. They are absorbed directly into portal circulation bypassing the lymphatic system
• C. They depend on bile-assisted transport via the lymphatic system
• D. They must be metabolized in the mitochondria via carnitine transport

Answer: (B)

Medium-chain triglycerides are absorbed in a different way from long-chain fats. Their shorter chains (about 6–12 carbons) are more water-soluble and can be digested and absorbed directly by enterocytes without needing bile-driven micelle formation or packaging into chylomicrons for transport via the lymphatic system. Instead, the medium-chain fatty acids enter the portal bloodstream and travel to the liver for metabolism. This bypass of the lymphatic system makes MCTs particularly advantageous in fat malabsorption, where bile flow, pancreatic lipase activity, or intestinal lymphatic transport may be impaired. Clinically, this means MCTs can provide usable calories with less fat reaching the stool, which is helpful in conditions like pancreatic insufficiency or lymphatic disorders.