Which statement about fat in preterm formulas is true?

Which statement about fat in preterm formulas is true?

• A. 40-50% of fat calories are long-chain fatty acids
• B. 40-50% of fat calories are medium-chain triglycerides
• C. All fats are short-chain fatty acids
• D. 40-50% of fat calories are MCTs

Answer: (D)

In preterm formulas, understanding fat digestion and absorption is key. Medium-chain triglycerides are favored because they are absorbed quickly and without needing bile salts or pancreatic lipase, which are often limited in preterm infants. This makes them an efficient energy source when the gut is immature. That’s why about 40-50% of fat calories in these formulas come from medium-chain triglycerides. The rest are typically long-chain fats, which do require the usual digestive processes. So the statement about 40-50% of fat calories being MCTs is correct, while the ideas that all fats are short-chain fatty acids or that a similar proportion would be long-chain fats don’t fit with how preterm formulas are designed.

In preterm formulas, understanding fat digestion and absorption is key. Medium-chain triglycerides are favored because they are absorbed quickly and without needing bile salts or pancreatic lipase, which are often limited in preterm infants. This makes them an efficient energy source when the gut is immature.

That’s why about 40-50% of fat calories in these formulas come from medium-chain triglycerides. The rest are typically long-chain fats, which do require the usual digestive processes. So the statement about 40-50% of fat calories being MCTs is correct, while the ideas that all fats are short-chain fatty acids or that a similar proportion would be long-chain fats don’t fit with how preterm formulas are designed.