Clinical trial Recruiting at 1 site Observational Ages 18 and up

Improving nutrition for babies born by C-section

Official title: Development of a Specific Infant Formula for Babies Born by Caesarean Section

Run by Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement · NCT07162025 · Data updated 2026-11-12

The project will test a new infant formula, developed using probiotics and physiological lipids sourced from breastfeeding mothers and vaginally born babies, to help babies born by C-section establish healthier gut microbiota.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment40 (estimated)
SponsorInstitut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
Academic / other
Locations1 site (Jouy-en-Josas)
StatusRecruiting
StartedSeptember 30, 2025
Main results expectedSeptember 30, 2028
Study endsSeptember 30, 2028
Registry record updatedNovember 4, 2026
Trial IDNCT07162025 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

The intended beneficiaries are infants born by cesarean section, particularly those in the early months of life when primary colonization occurs.

Probably not a fit

Babies born vaginally or infants with contraindications to probiotic supplements or modified lipid formulas are unlikely to benefit from this specific intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This project isolates beneficial microbes from breast milk and stool of vaginally born, exclusively breastfed infants and their mothers, then selects strains to include in a reformulated infant milk enriched with physiological lipids. The selected probiotics and lipid profile will be combined to create an optimized formula designed to support primary gut colonization in infants lacking maternal vaginal exposure. Preclinical testing will be performed in a cesarean birth model to measure effects on microbiota, metabolic markers, and immune-related outcomes. The work aims to produce a candidate formula for further clinical testing in C-section–born infants.

Why it matters

Potential benefit: If successful, a tailored infant formula could help restore healthier early gut colonization after C-section and reduce associated short- and long-term health risks.

How similar studies have gone: Breastfeeding and approaches like maternal vaginal or fecal microbiota transfer have shown partial success in restoring microbiota, but formula-based strategies targeting C-section colonization are novel and largely untested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Breastfeeding mothers:

Aged 18 years and older Breastfeeding for less than 6 months Not having taken probiotics in the 6 months prior to sampling Not having taken antibiotics in the 6 months prior to sampling No chronic medical conditions Not undergoing chronic treatment No history of gestational diabetes Body mass index (BMI) below 25 at the start of pregnancy Having given their consent to participate in the study and to the collection of their baby's stool samples Not deprived of liberty or placed under guardianship

\- Babies: Aged less than 6 months Born vaginally Born at term or at least 37 weeks of pregnancy Exclusively breastfed Not having received intrapartum antibiotic treatment Having no known medical conditions Not receiving any medical supplements other than conventional vitamins Whose mothers meet the inclusion criteria detailed above

Exclusion Criteria:

Breastfeeding mothers:

* Under the age of 18
* Breastfeeding for 6 months or more
* Having been on antibiotic therapy in the 6 months prior to sampling
* Having taken probiotics in the 6 months prior to sampling
* Having a chronic illness
* Undergoing chronic treatment
* Who have developed gestational diabetes
* Who have a BMI greater than 25 at the start of pregnancy
* Who have given their consent to participate in the study (breast milk collection) but not to the collection of their baby's stool samples
* Who are deprived of their liberty or under guardianship.

Babies:

* Aged over 6 months
* Born by caesarean section
* Born before 37 weeks of pregnancy
* Not exclusively breastfed
* Having undergone intrapartum antibiotic treatment
* Taking medical supplements other than conventional vitamins
* Presenting with any type of pathology
* Whose mothers meet the non-inclusion criteria detailed above
* Receiving medical supplementation other than conventional vitamins

Where it's running

  • Inrae
    Jouy-en-Josas, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.