06/17/2026
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The development of adult microbiome health begins at birth, and through age 2, sets the potential tone for lifetime health. For example, microbiome development influences the development of our immune system, and when it is disrupted, we run the risk of inflammatory and allergic conditions developing sooner or later - including allergies, food intolerances, eczema, asthma, and autoimmune diseases. It can also set the tone for depression, anxiety, stress response, endometriosis, and other chronic adult challenges.
So nourishing our babies’ microbiomes from the start is so important - and something we can all do.
The biggest risk factors that can interfere with the health of the newborn microbiome are:
🔆 Dysbiosis (the overgrowth of potentially harmful bacteria, yeasts, and other organisms, or lack of ample amounts of healthy microbes)
🔆 Antibiotic exposure of mom in pregnancy/labor or while breastfeeding
🔆 Cesarean birth
🔆 Lack of breastfeeding for at least the first 4 months of life, and ideally the first year
🔆 Antibiotics given to baby in the first 2 years of life
What can a momma do? Naturally, whenever possible, avoid antibiotics, aim for a vaginal birth, and breastfeed. But sometimes life happens, and the best laid plans get derailed.
To address this head on, you can take a probiotic during pregnancy, which can not only support baby’s microbiome, but can prevent UTIs, preterm labor, and other complications. I recommend taking a combination product with Lactobacilllus rhamnosus, L reuteri, L crispatus, or L salivarius. And if you have had a cesarean or needed antibiotics in labor (i..e, for GBS), give baby a probiotic for 6 months after birth. I use Klaire Therbiotic Infant (no financial relationship) in my practice, letting baby take a little off of mom’s finger, or diluting with some breastmilk and giving it by dropper.
Have questions? Drop ‘em in the comments and I’ll circle back around!
Want to learn more? Check out my article and podcast at the ⭐link below. I’ll be back talking about vaginal seeding, soon!
https://avivaromm.com/protecting-babys-microbiome/
xx, Aviva
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