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Protein and carbohydrate content of infant formula purchased in the United States

机译：Protein and carbohydrate content of infant formula purchased in the United States

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Abstract Background The protein and carbohydrate composition of formula fed infants' diets in the United States (US) has not been described. The aims of this study were to characterize these dietary exposures in infant formula purchased in the US and to estimate the proportion of formula purchased which is hypoallergenic or lactose‐reduced formula. Methods Powdered infant formula purchase data from all major physical stores in the US prior to the COVID‐19 pandemic, between 2017 and 2019, were obtained from Information Resources, Inc. Protein and carbohydrate composition and scoop sizes for each formula were obtained from manufacturers. Ready to feed liquid products, products for premature infants and products for over 1?year old were not included. Results Total volumes of term formula purchased were 216?million kg of formula powder (equivalent to 1.65 billion litres) over 3?years. Intact protein formula was 67.9% of formula purchased, 26.6% was partially hydrolysed and 5.5% was hypoallergenic (5.2% extensively hydrolysed protein; 0.3% amino acid based). Soy protein formula represented 5.1% of formula purchased. Carbohydrate content overall was 52.7% lactose, 42.3% glucose polymers and 5.0% sucrose. 23.7% of formula purchased included sucrose as a carbohydrate. Of all formula purchased, 59.0% was lactose reduced, containing a non‐lactose carbohydrate. Of ‘standard’ formula, defined as intact protein, non‐thickened, cow's milk formula, 32.3% was lactose reduced. The proportion of hypoallergenic formula purchased significantly exceeded the prevalence of cow's milk protein allergy and increased over the 3‐year study period from 4.9% to 7.6% of all formula sold. Conclusions US infants are exposed to unnecessarily high levels of non‐lactose carbohydrates and hypoallergenic formula, and this may represent a significant nutritional health risk.

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