← Eichor
Study identifier: NCT06390878 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Nationwide Research on the Rewilding of Kindergarten Yards

Condition: Microbial Colonization · Atopic Dermatitis · Asthma in Children  ·  Sponsor: Natural Resources Institute Finland

PhaseNA
Planned participants320
Who can joinAll sexes, 1 Year to 5 Years
Healthy volunteersYes

About this study

Biodiversity is essential for nature and human well-being. Land use has reduced biodiversity in cities that is associated with altered commensal microbiota and a rising burden of immunological disorders among urban children. The investigators will estimate how rewilding of kindergarten yards affects commensal microbiome, prevalence of allergies, asthma, atopic dermatitis and infections, cortisol levels, cognitive skills and plasma cytokine levels of children. Our specific aims are: To assess if rewilding diversifies health-associated skin, saliva and gut microbiota and reduces infectious diseases and atopic or allergic symptoms. Assess whether the rewilding has positive effects on cognitive skills. Assess whether the rewilding changes cortisol and plasma cytokine levels. The investigators will recruit altogether 320 (160 per treatment) study subjects aged between 1-5 to questionnaire study (Task 2), from which 120 study subjects will be analyzed more detailed using microbiological and blood samples (Task 1).

This description comes directly from the study's public registry record.

Talk to the study team

Sanna Hurtola  ·  +358295322500  ·  sanna.hurtola@luke.fi

Always discuss trial participation with your own doctor first.

Locations (2)

Natural Resources Institute FinlandHelsinki, Uusimaa, FinlandRecruiting
Tampere UniversityTampere, FinlandRecruiting

Follow this study

Get one email when the public record changes — results posted, or the study's status changes. Nothing else, ever.

We email about this public record only. Unsubscribe anytime with one click. Never medical advice.

Is this your study? This page was generated automatically from the public registry record. Sponsors can claim it — free — to add branding and verified contact routing. Claim this page →

This page is independently generated by Eichor from the public ClinicalTrials.gov record and re-synced daily. It is not the sponsor's official website unless claimed. Nothing here is medical advice; eligibility is always determined by the study team — talk to your own doctor first.

Source record: clinicaltrials.gov/study/NCT06390878