Probiotic and C-section newborns
The first week of life is more than just bonding time for new parents and babies—it’s also when a baby’s gut begins to fill with important bacteria that can shape their health for years to come.
Babies born vaginally and those born via C-section start life with very different microbiomes (the community of bacteria in the gut). Vaginal birth allows babies to pick up beneficial bacteria from the mother’s gut. C-section babies, however, tend to be colonized with more bacteria commonly found in hospital environments—some of which can be resistant to antibiotics.
Research from the UK Baby Biome Prospective Study has identified three key “pioneer” bacteria that often colonize babies in the first week:
The findings were striking
Babies born vaginally with high amounts of b. longum and b. breve were far less likely to be hospitalized with vLRTI in the first two years of life. In contrast, C-section babies—and some vaginally born babies without these bacteria—had a higher risk of such hospitalizations.
It’s not yet clear why some vaginally-delivered babies miss out on these beneficial bacteria, but researchers agree that C-section babies almost always lack them.
What does this mean for parents?
The authors stress that more research is needed before making firm recommendations. However, if C-section babies are missing these important gut pioneers, it’s reasonable to consider probiotics containing both b. longum and b. breve. One option, Probonix Humarian Liquid Probiotic, is safe for infants and includes both strains. While we still need large clinical trials to prove benefits, the potential upside may outweigh the minimal risks (aside from cost).
Bottom line: The first week of life is a crucial window for gut health. Supporting it with the right bacteria could be one way to help protect your baby from serious infections down the road. And, as always confer with your pediatric provider for advice and counsel.
By Shelly Senders, MD, founder and CEO of Senders Pediatrics located in South Euclid, OH.
Babies born vaginally and those born via C-section start life with very different microbiomes (the community of bacteria in the gut). Vaginal birth allows babies to pick up beneficial bacteria from the mother’s gut. C-section babies, however, tend to be colonized with more bacteria commonly found in hospital environments—some of which can be resistant to antibiotics.
Research from the UK Baby Biome Prospective Study has identified three key “pioneer” bacteria that often colonize babies in the first week:
- Bifidobacterium longum (b. longum) – passed from the mother’s gut, supports healthy immune function.
- Bifidobacterium breve (b. breve) – adapted to thrive on breast milk and block harmful germs from settling in.
- Enterococcus faecalis (e. faecalis) – considered a riskier bacteria with potential to cause infections.
The findings were striking
Babies born vaginally with high amounts of b. longum and b. breve were far less likely to be hospitalized with vLRTI in the first two years of life. In contrast, C-section babies—and some vaginally born babies without these bacteria—had a higher risk of such hospitalizations.
It’s not yet clear why some vaginally-delivered babies miss out on these beneficial bacteria, but researchers agree that C-section babies almost always lack them.
What does this mean for parents?
The authors stress that more research is needed before making firm recommendations. However, if C-section babies are missing these important gut pioneers, it’s reasonable to consider probiotics containing both b. longum and b. breve. One option, Probonix Humarian Liquid Probiotic, is safe for infants and includes both strains. While we still need large clinical trials to prove benefits, the potential upside may outweigh the minimal risks (aside from cost).
Bottom line: The first week of life is a crucial window for gut health. Supporting it with the right bacteria could be one way to help protect your baby from serious infections down the road. And, as always confer with your pediatric provider for advice and counsel.
By Shelly Senders, MD, founder and CEO of Senders Pediatrics located in South Euclid, OH.
Photo credit: Adobe Stock / By Anatta_Tan