US Edition'Good' Gut Microbe Found to Support Fetal Growth and Reduce Pregnancy Risks
The study shows Bifidobacterium breve boosts placental hormone production, reducing complications and improving fetal growth in up to 10% of first-time pregnancies, researchers say.
- On October 6, 2025, Cambridge University researchers reported that Bifidobacterium breve, a beneficial gut bacterium in pregnant mice, influences the placenta's hormone production, according to findings published in a scientific journal.
- The study aimed to investigate how the presence or absence of this 'good' gut bacterium could affect placental function and pregnancy outcomes.
- By comparing mice with and without Bifidobacterium breve, researchers observed over 150 placental biological processes involving more than 400 proteins changed in response to the microbe.
- Dr. Jorge Lopez Tello, the study’s lead author, explained that their findings introduce a novel approach for monitoring both maternal and fetal health during pregnancy by analyzing the mother’s gut microbiome.
- The findings suggest that manipulating the maternal gut microbiome with probiotics may help identify and possibly reduce pregnancy complications, though further research is needed to confirm its safety and effectiveness.
27 Articles
27 Articles
Study finds link between gut microbiome and the placenta
Cross-section of mouse placenta. Credit: Jorge Lopez-Tello New research in mice shows that a species of gut bacteria, Bifidobacterium breve, regulates the placental production of hormones which are critical for healthy pregnancy. Pregnant mice without B. breve in their guts were also found to experience a higher rate of complications and increased early foetal loss. B. breve occurs naturally in the human and mouse gut microbiome and increases in…
Study reveals ‘good’ bacteria boosts placenta for healthier pregnancies
By Stephen Beech A "good" gut bacteria found in probiotic drinks and tablets leads to a healthier pregnancy, according to new research. The Cambridge University-led study has found the first "clear evidence" that Bifidobacterium breve in pregnant mothers regulates the…
'Good' gut microbe found to support fetal growth and reduce pregnancy risks
Research led by the University of Cambridge has found the first clear evidence that the 'good' gut bacteria Bifidobacterium breve in pregnant mothers regulates the placenta's production of hormones critical for a healthy pregnancy.
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