In fat malabsorption, which lipid source should be used to provide concentrated energy?

In fat malabsorption, which lipid source should be used to provide concentrated energy?

• A. MCTs
• B. Long chain triglycerides
• C. Free amino acids
• D. Fructooligosaccharides

Answer: (A)

In fat malabsorption, you want a fat source that delivers energy without needing bile, pancreatic lipase, or lymphatic transport. Medium-chain triglycerides fit this need because their fatty acids are shorter and more water-soluble, so they’re absorbed directly into the portal circulation by enterocytes and do not require micelle formation or chylomicron-based lymphatic transport. This makes them a reliable concentrated energy source even when fat digestion and absorption are impaired. Long-chain triglycerides, in contrast, depend on bile salts and pancreatic lipase to form micelles and then are packaged into chylomicrons for lymphatic transport—procedures that are inefficient in fat malabsorption. Free amino acids and fructooligosaccharides are not fats and do not provide a lipid-based energy source, so they don’t fulfill the same role.

In fat malabsorption, you want a fat source that delivers energy without needing bile, pancreatic lipase, or lymphatic transport. Medium-chain triglycerides fit this need because their fatty acids are shorter and more water-soluble, so they’re absorbed directly into the portal circulation by enterocytes and do not require micelle formation or chylomicron-based lymphatic transport. This makes them a reliable concentrated energy source even when fat digestion and absorption are impaired.

Long-chain triglycerides, in contrast, depend on bile salts and pancreatic lipase to form micelles and then are packaged into chylomicrons for lymphatic transport—procedures that are inefficient in fat malabsorption. Free amino acids and fructooligosaccharides are not fats and do not provide a lipid-based energy source, so they don’t fulfill the same role.