Optimal Protein Intake in Healthy Children and Adolescents: Evaluating Current Evidence
Overview
Affiliations
High protein intake might elicit beneficial or detrimental effects, depending on life stages and populations. While high protein intake in elder individuals can promote beneficial health effects, elevated protein intakes in infancy are discouraged, since they have been associated with obesity risks later in life. However, in children and adolescents (4-18 years), there is a scarcity of data assessing the effects of high protein intake later in life, despite protein intake being usually two- to three-fold higher than the recommendations in developed countries. This narrative review aimed to revise the available evidence on the long-term effects of protein intake in children and adolescents aged 4-18 years. Additionally, it discusses emerging techniques to assess protein metabolism in children, which suggest a need to reevaluate current recommendations. While the optimal range is yet to be firmly established, available evidence suggests a link between high protein intake and increased Body Mass Index (BMI), which might be driven by an increase in Fat-Free Mass Index (FFMI), as opposed to Fat Mass Index (FMI).
Wang Y, Sun D, Zhu Z J Int Soc Sports Nutr. 2025; 22(1):2471471.
PMID: 39994891 PMC: 11864004. DOI: 10.1080/15502783.2025.2471471.
Tang F, Zhou M, Li B Sci Rep. 2024; 14(1):31938.
PMID: 39738717 PMC: 11685547. DOI: 10.1038/s41598-024-83459-4.
Zhao X, Liu T, Han C, Zhao J, Li Y, Huo J Nutrients. 2024; 16(22).
PMID: 39599692 PMC: 11597918. DOI: 10.3390/nu16223906.
Children's Diets and Planetary Health: A Study in Wroclaw, Poland, and Sydney, Australia.
Orkusz A, Bogueva D Foods. 2024; 13(22).
PMID: 39593952 PMC: 11592964. DOI: 10.3390/foods13223536.
Morales-Suarez-Varela M, Peraita-Costa I, Llopis-Morales A, Llopis-Gonzalez A Nutrients. 2024; 16(16).
PMID: 39203786 PMC: 11356814. DOI: 10.3390/nu16162649.