Andrea Santos-Guzmán, Mishel Unar-Munguía, Juan A Rivera, Ivonne Ramírez-Silva
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Abstract
Background: Current international infant and young child (IYC) feeding recommendations consider nutrition and health but not environmental impacts. Only a handful of countries have dietary guidelines that provide quantitative recommendations for food groups of environmental concern.
Objectives: This study aimed to perform a narrative review of the environmental impacts of commercial milk formula compared with breastfeeding and to analyze the degree to which current country-specific IYC feeding recommendations are aligned with sustainable dietary targets.
Methods: A mixed-methods review was conducted, including the following: 1) a narrative review of the environmental impact of commercial milk formula compared with breastfeeding and 2) a comparison of recommended intake of meats and dairy for children IYC based on country-specific dietary guidelines compared with the EAT-Lancet Commission dietary targets (ELCT) for children 24 mo or older and adults and if the ELCT should be adjusted for the energy needs of IYC.
Results: Formula feeding has a greater environmental impact (∼48% higher carbon footprint) than exclusive breastfeeding. Available country-specific dietary guidelines for meat and dairy products in children IYC are, in general, at or below the upper limits of the ELCT recommended ranges for older children and adults but are in most cases above the upper limit when adjusting for the energy needs of IYC.
Conclusions: Exclusive breastfeeding should be protected and promoted not only as the healthier but also as the most sustainable alternative. Available complementary dietary feeding recommendations of nonprocessed meat and dairy fall below current ELCT for older children and adults. Given that IYC require a more nutrient-dense diet than older children and adults and considering the small quantities they consume, we recommend using the unadjusted ELCT as reference for IYC feeding while specific international consumption recommendations are developed for this age group.
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