Exploring the Potential of Human Milk and Formula Milk on Infants' Gut and Health

Hui-Yuan Chong, Loh Teng-Hern Tan, Jodi Woan-Fei Law, Kar-Wai Hong, Vanassa Ratnasingam, Nurul-Syakima Ab Mutalib, Learn-Han Lee, Vengadesh Letchumanan, Hui-Yuan Chong, Loh Teng-Hern Tan, Jodi Woan-Fei Law, Kar-Wai Hong, Vanassa Ratnasingam, Nurul-Syakima Ab Mutalib, Learn-Han Lee, Vengadesh Letchumanan

Abstract

Early-life gut microbiota plays a role in determining the health and risk of developing diseases in later life. Various perinatal factors have been shown to contribute to the development and establishment of infant gut microbiota. One of the important factors influencing the infant gut microbial colonization and composition is the mode of infant feeding. While infant formula milk has been designed to resemble human milk as much as possible, the gut microbiome of infants who receive formula milk differs from that of infants who are fed human milk. A diverse microbial population in human milk and the microbes seed the infant gut microbiome. Human milk contains nutritional components that promote infant growth and bioactive components, such as human milk oligosaccharides, lactoferrin, and immunoglobulins, which contribute to immunological development. In an attempt to encourage the formation of a healthy gut microbiome comparable to that of a breastfed infant, manufacturers often supplement infant formula with prebiotics or probiotics, which are known to have a bifidogenic effect and can modulate the immune system. This review aims to elucidate the roles of human milk and formula milk on infants' gut and health.

Keywords: formula milk; gut microbiota; human milk; immune system; infant.

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Illustration of how the different feeding mode modulates the infant gut microbiome. Human milk naturally contains lactoferrin, oligosaccharides, immunoglobulins, extracellular vesicles, and human milk microbiota, which aids in modulating a healthy infant gut. While formula milk often has additional supplements added to mimic human milk.

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