Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Soil exposure and allergies

Ottman, N. et al.

2019

Read source ↗ All evidence

Summary

This paper, published in the Journal of Allergy and Clinical Immunology, investigates the association between exposure to soil-dwelling microorganisms and the development or modulation of allergic disease. Drawing likely on the 'old friends' or biodiversity hypothesis, the authors suggest that reduced contact with environmental microbiota — including those found in soil — may contribute to dysregulated immune responses underlying allergy. The extended page range (including supplementary material) indicates a substantial empirical dataset with detailed immunological analysis.

UK applicability

The findings are broadly applicable to UK public health and environmental health policy, particularly in the context of declining biodiversity, urban green space access, and childhood allergy trends. UK initiatives promoting outdoor play, rewilding, and farm-based education programmes may find evidential support in this line of research.

Key measures

Allergic sensitisation rates; immune biomarkers (e.g. IgE levels); soil microbial diversity indices; allergy prevalence or symptom scores

Outcomes reported

The study examined the relationship between exposure to soil microbiota and the risk or severity of allergic conditions, likely measuring immune markers, sensitisation rates, or allergy prevalence in relation to soil contact. It may have assessed mechanisms by which diverse soil microbial communities modulate immune tolerance.

Theme
Nutrition & health
Subject
Environmental immunology & microbiome
Study type
Research
Study design
Observational cohort
Source type
Peer-reviewed study
Status
Published
Geography
International
System type
Human clinical
Catalogue ID
XL0474

Topic tags

Pulse AI · ask about this record

Dig deeper with Pulse AI.

Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.