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Encyclopedia of Nutritional Psychology

Secretory Immunoglobulin A (sIgA)

Evidence-informed definition Updated July 23, 2024 How to cite this entry

sIgA is an antibody secreted by plasma cells into the gut lumen. It forms a protective barrier against harmful pathogens that enter the gut through the mouth or skin. sIgA is present in bodily secretions such as saliva, tears, and breast milk (Mantis et al., 2011),.

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Written by Ephi Lu
Reviewed by CNP Encyclopedia Editorial Board
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Ephi Lu. (2024). Secretory Immunoglobulin A (sIgA). In Encyclopedia of Nutritional Psychology. The Center for Nutritional Psychology.

https://www.nutritional-psychology.org/encyclopedia/secretory-immunoglobulin-a-siga/
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