Effects of Probiotics on Newborn Health and Growth

The BEGIN Study Bifidobacterium Infantis to Newborns: Effects of Modulating the Gut Microbial Composition on Growth, Immune Function and Inflammatory Conditions

Not applicable Interventional University of Aarhus · NCT06452199

This study is testing if giving a specific probiotic to healthy newborns can help boost their immune system, lower infections, and support their growth.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment1000 (estimated)
Ages1 Day to 7 Days
SexAll
SponsorUniversity of Aarhus Academic / other
Locations2 sites (Herning, Central Jutland and 1 other locations)
Trial IDNCT06452199 on ClinicalTrials.gov

What this trial studies

The BEGIN Study is a randomized controlled trial investigating the effects of the probiotic Bifidobacterium longum subspecies infantis on healthy newborns. The study aims to determine whether administering this probiotic can enhance immune function, reduce bacterial infections, and improve overall health and growth in infants. Participants will receive either the probiotic or a placebo, and researchers will assess various health outcomes and the infant gastrointestinal microbiome. The study is conducted in the Region Midtjylland, Denmark, with parents administering the probiotic to their newborns.

Who should consider this trial

Good fit: Ideal candidates for this study are healthy infants born at term in the Region Midtjylland, Denmark.

Not a fit: Patients who may not benefit from this study include those with diagnosed immune deficiencies or other significant health conditions.

Why it matters

Potential benefit: If successful, this study could lead to improved immune function and overall health in newborns, potentially reducing the incidence of infections and the need for antibiotics.

How similar studies have performed: Other studies have shown promising results with probiotics in infants, suggesting potential benefits in immune function and health outcomes.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Infants born at term (above gestational week 37)
* Infants born in Region Midtjylland Denmark receiving a Danish CPR number.
* Parents age is above 18
* At least one parent holds a smartphone (for study app) and is able to fill out Danish questionaries
* Both legal parents are willing and able to provide written informed consent prior to participation, regarding both themselves and their future child.

Exclusion Criteria:

* Multiple pregnancy
* Child diagnosed with immune deficiency, renal, gastrointestinal, hepatic, or endocrine diseases
* Parents expecting to give other probiotics

Where this trial is running

Herning, Central Jutland and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions HealthyHealthy NutritionMicrobiotaGastrointestinal MicrobiomeProbioticsBifidobacterium longum subspecies infantisPaediatricsInfant
Last reviewed 2026-06-13 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.