ArticleOccupational and environmental medicine2007
Hay fever and asthma symptoms in conventional and organic farmers in The Netherlands.
Article in Occupational and environmental medicine, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.
- Defining a role for ambient TLR ligand exposures in the genesis and prevention of allergic diseases.Seminars in immunopathology · 2008Pooled it
- Respiratory diseases and allergy in farmers working with livestock: a EAACI position paper.Clinical and translational allergy · 2020Review
- Methodological evaluation of human research on asthmagenicity and occupational cleaning: a case study of quaternary ammonium compounds ("quats").Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2019Review
- Lifetime allergic rhinitis prevalence among US primary farm operators: findings from the 2011 Farm and Ranch Safety survey.International archives of occupational and environmental health · 2017Article
- The effects of environmental toxins on allergic inflammation.Allergy, asthma & immunology research · 2014Review
- Farm living: effects on childhood asthma and allergy.Nature reviews. Immunology · 2010Review
- 99th Dahlem conference on infection, inflammation and chronic inflammatory disorders: farm lifestyles and the hygiene hypothesis.Clinical and experimental immunology · 2010Article
- Allergen tolerance versus the allergic march: the hygiene hypothesis revisited.Current allergy and asthma reports · 2008Review
- A comprehensive review of levels and determinants of personal exposure to dust and endotoxin in livestock farming.Journal of exposure science & environmental epidemiologyReview
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundFarming has been associated with respiratory symptoms and with protection against atopy. To date, effects of organic farming on respiratory health have not been studied.
aimsTo (1) compare hay fever and asthma-like symptoms in organic and conventional farmers and (2) assess associations between current and childhood farm exposures and respiratory health effects by conducting a survey.
methodsQuestionnaire data from 1205 conventional and 593 organic farmers were evaluated. Associations between health effects and farm exposures were assessed by logistic regression analyses.
resultsOrganic farmers reported less wheezing with shortness of breath and slightly more hay fever than conventional farmers. However, organic farming was not an independent determinant of hay fever when adjusted for farming practices and potential confounders. Livestock farmers who grew up on a farm had a threefold lower prevalence of hay fever than crop farmers without a farm childhood (odds ratio (OR) 0.3, 95% confidence interval (CI) 0.1 to 0.5). Both crop farmers who grew up on a farm and livestock farmers who did not grow up on a farm had a reduced prevalence, although less pronounced and not statistically significant. Use of disinfectants containing quaternary ammonium compounds was positively related to hay fever (OR 2.1, 95% CI 1 to 4.4). No effects of farming practices were found for asthma.
conclusionsOur study adds to the evidence that a farm childhood in combination with current livestock farming protects against allergic disorders. This effect was found for both organic and conventional farmers.
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