Research on improving kindergarten yards for children's health

Nationwide Research on the Rewilding of Kindergarten Yards - Vahvistu

Not applicable Interventional Natural Resources Institute Finland · NCT06390878

This study is testing whether making kindergarten yards more natural and full of plants can improve the health and learning of children aged 1-5 by looking at things like allergies, asthma, and their overall well-being.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment320 (estimated)
Ages1 Year to 5 Years
SexAll
SponsorNatural Resources Institute Finland Government
Locations2 sites (Helsinki, Uusimaa and 1 other locations)
Trial IDNCT06390878 on ClinicalTrials.gov

What this trial studies

This study investigates the impact of rewilding kindergarten yards on children's health by enhancing biodiversity. It aims to evaluate how these changes affect the commensal microbiome, prevalence of allergies, asthma, atopic dermatitis, and cognitive skills in children aged 1-5. The study will involve 320 participants, with assessments of microbiota diversity, health symptoms, cortisol levels, and cognitive abilities. The approach includes both observational and microbiological analyses to understand the health benefits of increased biodiversity in urban settings.

Who should consider this trial

Good fit: Ideal candidates for this study are children aged 1-5 who attend kindergarten and have not used antibiotics in the past year.

Not a fit: Patients who have used antibiotics in the year prior to sampling may not benefit from this study due to potential alterations in their microbiota.

Why it matters

Potential benefit: If successful, this study could lead to improved health outcomes for children by reducing allergies and enhancing cognitive skills through environmental changes.

How similar studies have performed: While the concept of rewilding is gaining attention, this specific approach to enhancing children's health through kindergarten yard biodiversity is relatively novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Attendance in kindergarten

Exclusion Criteria:

* Use of antibiotics in the year before sampling

Where this trial is running

Helsinki, Uusimaa 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 Microbial ColonizationAtopic DermatitisAsthma in ChildrenAllergyCognitive ChangeRespiratory InfectionNature, HumanCommensal microbiome
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.