The Glycemic Response to Infant Formulas: A Randomized Clinical Trial

Area of Science:

• Nutrition Science
• Human Metabolism
• Pediatric Nutrition Research

Background:

• Infant formulas aim to mimic human milk composition.
• Lactose-free and milk protein-free formulas are common alternatives for medical or personal reasons.
• Understanding their metabolic impact is crucial.

Purpose of the Study:

• To compare the glycemic and insulinemic indices of different commercial infant formulas.
• To evaluate the metabolic response to standard, soy protein-based, and lactose-free infant formulas.

Main Methods:

• A randomized, double-blind, crossover study involving 20 healthy adults (25-40 years old).
• Participants consumed three types of infant formulas: standard cow's milk protein-based, soy protein-based, and lactose-free.
• Glycemic and insulinemic responses were measured and compared.

Main Results:

• No significant differences in glycemic index were observed among the three infant formulas (p=0.21).
• Maximal postprandial glucose levels were significantly higher for the soy protein-based formula compared to standard and lactose-free formulas (p=0.001).

Conclusions:

• Cow's milk protein-based, soy protein-based, and lactose-free infant formulas exhibit comparable glycemic indices.
• Soy protein-based infant formula resulted in a significantly greater increase in blood glucose after consumption.
• The clinical implications of these findings require further investigation.