GOS have been shown to promote the growth of bifidogenic bacteria
Ben, X.-M., Li, J., Feng, Z.-T., Shi, Z.-Y., Lu, Y.-D., Chen, R., & Zhou, X.-Y. (2008). Low level of galacto-oligosaccharide in infant formula stimulates growth of intestinal Bifidobacteria and Lactobacilli. World Journal of Gastroenterology, 14(42), 6564. https://doi.org/10.3748/wjg.14.6564
Fanaro, S., Marten, B., Bagna, R., Vigi, V., Fabris, C., Peña-Quintana, L., Argüelles, F., Scholz-Ahrens, K. E., Sawatzki, G., Zelenka, R., Schrezenmeir, J., de Vrese, M., & Bertino, E. (2009). Galacto-oligosaccharides are bifidogenic and safe at weaning: a double-blind randomized multicenter study. Journal of Pediatric Gastroenterology and Nutrition, 48(1), 82–88. http://www.ncbi.nlm.nih.gov/pubmed/19172129
Giovannini, M., Verduci, E., Gregori, D., Ballali, S., Soldi, S., Ghisleni, D., & Riva, E. (2014). Prebiotic Effect of an Infant Formula Supplemented with Galacto-Oligosaccharides: Randomized Multicenter Trial. Journal of the American College of Nutrition. https://doi.org/10.1080/07315724.2013.878232
Sierra, C., Bernal, M.-J., Blasco, J., Martínez, R., Dalmau, J., Ortuño, I., Espín, B., Vasallo, M.-I., Gil, D., Vidal, M.-L., Infante, D., Leis, R., Maldonado, J., Moreno, J.-M., & Román, E. (2014). Prebiotic effect during the first year of life in healthy infants fed formula containing GOS as the only prebiotic: a multicentre, randomised, double-blind and placebo-controlled trial. European Journal of Nutrition, 54(1), 89–99. https://doi.org/10.1007/s00394-014-0689-9
. A substantial number of studies with formula-fed infants has shown that infant formula enriched with Vivinal® GOS caused a significant increase in Bifidobacteria, in comparison to infants receiving a standard formula without GOS
Ben, X.-M. et al. Supplementation of milk formula with galacto-oligosaccharides improves intestinal micro-flora and fermentation in infants. Chin. Med. J. (Engl). 117, 927–931 (2004)
Ben, X.-M., Li, J., Feng, Z.-T., Shi, Z.-Y., Lu, Y.-D., Chen, R., & Zhou, X.-Y. (2008). Low level of galacto-oligosaccharide in infant formula stimulates growth of intestinal Bifidobacteria and Lactobacilli. World Journal of Gastroenterology, 14(42), 6564. https://doi.org/10.3748/wjg.14.6564
Fanaro, S., Marten, B., Bagna, R., Vigi, V., Fabris, C., Peña-Quintana, L., Argüelles, F., Scholz-Ahrens, K. E., Sawatzki, G., Zelenka, R., Schrezenmeir, J., de Vrese, M., & Bertino, E. (2009). Galacto-oligosaccharides are bifidogenic and safe at weaning: a double-blind randomized multicenter study. Journal of Pediatric Gastroenterology and Nutrition, 48(1), 82–88. http://www.ncbi.nlm.nih.gov/pubmed/19172129
. GOS may contribute to the body’s immune system, since specific health outcomes in clinical trials where a reduced incidence of infections was observed have been connected to the presence of GOS in infant formula
Arslanoglu S, Moro GE, Boehm G. Early supplementation of prebiotic oligosaccharides protects formula-fed infants against infections during the first 6 months of life. J Nutr. Published online 2007. doi:10.1093/jn/137.11.2420
Ranucci G, Buccigrossi V, Borgia E, et al. Galacto-oligosaccharide/polidextrose enriched formula protects against respiratory infections in infants at high risk of atopy: A randomized clinical trial. Nutrients. Published online 2018. doi:10.3390/nu10030286
. Supplementation of infant formula with GOS has been shown to improve infant stool consistency and transit time
Sierra, C., Bernal, M.-J., Blasco, J., Martínez, R., Dalmau, J., Ortuño, I., Espín, B., Vasallo, M.-I., Gil, D., Vidal, M.-L., Infante, D., Leis, R., Maldonado, J., Moreno, J.-M., & Román, E. (2014). Prebiotic effect during the first year of life in healthy infants fed formula containing GOS as the only prebiotic: a multicentre, randomised, double-blind and placebo-controlled trial. European Journal of Nutrition, 54(1), 89–99. https://doi.org/10.1007/s00394-014-0689-9
Williams T, Choe Y, Price P, et al. Tolerance of formulas containing prebiotics in healthy, term infants. J Pediatr Gastroenterol Nutr. Published online 2014. doi:10.1097/MPG.0000000000000513
, indicating that GOS contributes to enhanced digestive comfort. GOS have also been shown to enhance calcium absorption in young girls
Whisner, C. M. et al. Galacto-oligosaccharides increase calcium absorption and gut bifidobacteria in young girls: a double-blind cross-over trial. Br. J. Nutr. 110, 1292–303 (2013).
and iron in infants
Paganini, D., Uyoga, M. A., Cercamondi, C. I., Moretti, D., Mwasi, E., Schwab, C., Bechtler, S., Mutuku, F. M., Galetti, V., Lacroix, C., Karanja, S., & Zimmermann, M. B. (2017). Consumption of galacto-oligosaccharides increases iron absorption from a micronutrient powder containing ferrous fumarate and sodium iron EDTA: A stable-isotope study in Kenyan infants. American Journal of Clinical Nutrition. https://doi.org/10.3945/ajcn.116.145060
. In a recent study, it was further shown that supplementation with GOS reduced anxiety in highly anxious young women: this effect was accompanied by an increase in Bifidobacteria in the gut
Johnstone, N., Milesi, C., Burn, O., van den Bogert, B., Nauta, A., Hart, K., Sowden, P., Burnet, P. W. J., & Cohen Kadosh, K. (2021). Anxiolytic effects of a galacto-oligosaccharides prebiotic in healthy females (18–25 years) with corresponding changes in gut bacterial composition. Scientific Reports. https://doi.org/10.1038/s41598-021-87865-w
.