{"id":385625,"date":"2026-04-18T09:52:08","date_gmt":"2026-04-18T09:52:08","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/385625\/"},"modified":"2026-04-18T09:52:08","modified_gmt":"2026-04-18T09:52:08","slug":"sibling-exposure-boosts-infant-gut-microbiome-recovery","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/385625\/","title":{"rendered":"Sibling Exposure Boosts Infant Gut Microbiome Recovery"},"content":{"rendered":"<p>CAESAREAN section\u00a0(CS)\u00a0birth has previously been linked to early disruption of the\u00a0<a href=\"https:\/\/www.emjreviews.com\/microbiology-infectious-diseases\/news\/nursery-life-reshapes-the-infant-microbiome\/\" rel=\"nofollow noopener\" target=\"_blank\">infant gut microbiome<\/a>, but new research suggests that exposure to specific bacteria and older siblings may help restore microbial balance within the first year of life.\u00a0<\/p>\n<p>The infant gut microbiome is essential for immune development, and disruption following\u00a0CS\u00a0has previously been associated with an increased risk of childhood asthma.\u00a0\u00a0<\/p>\n<p>Whether this altered microbial profile can recover, and what factors may influence this process, has\u00a0remained\u00a0unclear.\u00a0<\/p>\n<p>Infant Gut Microbiome Restoration After Caesarean Section\u00a0<\/p>\n<p>In this study of 700 children from a prospective birth cohort, researchers developed a \u201crestoration score\u201d to assess how closely the gut microbiome at 1 year resembled that of vaginally delivered infants. This infant gut microbiome restoration score enabled the team to quantify recovery and investigate early-life predictors.\u00a0<\/p>\n<p>The findings showed that gut microbiome composition at 1 week of age was a predictor of the restoration score at 1 year. This suggests that early microbial patterns may play\u00a0an important role\u00a0in shaping later microbiome development.\u00a0<\/p>\n<p>Notably, infants with older siblings had significantly higher restoration scores. This association\u00a0appeared to be\u00a0driven by increased exposure to beneficial bacteria,\u00a0likely transferred\u00a0through close household contact.\u00a0\u00a0<\/p>\n<p>The findings were replicated in an independent Canadian cohort, supporting their robustness across populations.\u00a0<\/p>\n<p>Early-Life Bacteria, Microbiome Restoration, and Asthma\u00a0<\/p>\n<p>Importantly, the findings suggested that microbiome disruption associated with CS delivery may be modifiable rather than permanent. Early bacterial exposures, particularly in the first weeks of life, appeared to influence whether the microbiome developed towards a more typical profile by 1 year.\u00a0<\/p>\n<p>However, as an observational study, causal relationships could not be confirmed. While the restoration score incorporated asthma outcomes into its broader analysis, further research is needed to\u00a0determine\u00a0whether improving microbiome restoration directly reduces asthma risk.\u00a0<\/p>\n<p>Overall, the findings suggested that the infant gut microbiome is dynamic and responsive to early-life environmental influences, with sibling exposure\u00a0emerging\u00a0as a potentially\u00a0important factor\u00a0in shaping microbial development after CS\u00a0delivery.\u00a0<\/p>\n<p>Reference\u00a0<\/p>\n<p>Jiang J et al. Early life bacteria and sibling exposure associate with restoration of the infant gut microbiome after\u00a0cesarean\u00a0section. Nat Commun.\u00a02026;DOI:10.1038\/s41467-026-71185-6.\u00a0<\/p>\n<p>Featured image:\u00a0Tomsickova\u00a0on Adobe Stock\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"CAESAREAN section\u00a0(CS)\u00a0birth has previously been linked to early disruption of the\u00a0infant gut microbiome, but new research suggests that&hellip;\n","protected":false},"author":2,"featured_media":385626,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[134,111,139,69],"class_list":{"0":"post-385625","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-health","8":"tag-health","9":"tag-new-zealand","10":"tag-newzealand","11":"tag-nz"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/385625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=385625"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/385625\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/385626"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=385625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=385625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=385625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}