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New Study: How do other siblings influence a child’s developing microbiome?

Toni Harman
5 min readAug 8, 2022

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Having other siblings in the home has been linked to decreased risk for atopic diseases, inflammatory bowel disease and an increased risk for infectious diseases. Now a really interesting new study reveals the influence of having older siblings, particularly a closely aged older sibling, on a child’s developing airway and gut microbiome.

How do other siblings influence a child’s developing microbiome Christensen E.D. et al. Microbiome 2022 http://microbiomecourses.com

Did you know….

Having other siblings can impact a child’s health.

Research has linked having other siblings in the home to decreased risk of atopic diseases and inflammatory bowel disease, but also an increased risk for infectious diseases.

If you follow this blog, you’ll know that many factors impact the development of the infant gut microbiome, including being born vaginally or by C-section, breastfeeding or fomula-feeding, and exposure to antibiotics.

Interestingly, on the development of the airway microbiome in early life, the presence of other siblings seems to have an even larger impact than mode of birth, breastfeeding, and antibiotic exposure.

Now new research finds the age of other siblings in the home can make a difference.

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Toni Harman
Toni Harman

Written by Toni Harman

I help parents and health professionals better understand the science of pregnancy, birth, breastfeeding and the microbiome. http://microbiomecourses.com

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