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Can Fam Physician. 2007 Oct;53(10):1712-20.

Non-cancer health effects of pesticides: systematic review and implications for family doctors.

Author information

  • 1Chesley Medical Clinic, Box 459, Chesley, ON. msanborn@sbghc.on.ca

Abstract

OBJECTIVE:

To investigate whether there are associations between exposure to pesticides and 4 chronic non-cancer health effects: dermatologic, neurologic, reproductive, and genotoxic effects.

DATA SOURCES:

We searched PreMedline, MEDLINE, and LILACS using the key word pesticide combined with the term for the specific health effect being searched. Reviewers scanned the references of all articles for additional relevant studies.

STUDY SELECTION:

Studies since 1992 were assessed using structured inclusion and quality-of-methods criteria. Studies scoring <4 on a 7-point global methodologic quality scale were excluded. In total, 124 studies were included. These studies had a mean quality score of 4.88 out of 7.

SYNTHESIS:

Strong evidence of association with pesticide exposure was found for all neurologic outcomes, genotoxicity, and 4 of 6 reproductive effects: birth defects, fetal death, altered growth, and other outcomes. Exposure to pesticides generally doubled the level of genetic damage as measured by chromosome aberrations in lymphocytes. Only a few high-quality studies focused on the dermatologic effects of pesticides. In some of these studies, rates of dermatitis were higher among those who had had high exposure to pesticides on the job.

CONCLUSION:

Evidence from research on humans consistently points to positive associations between pesticide exposure and 3 of the 4 non-cancer health outcomes studied. Physicians have a dual role in educating individual patients about the risks of exposure and in reducing exposure in the community by advocating for restrictions on use of pesticides.

Comment in

  • [Attention! Danger!]. [Can Fam Physician. 2007]
  • Friend or foe. [Can Fam Physician. 2007]
PMID:
17934035
[PubMed - indexed for MEDLINE]
PMCID:
PMC2231436
Free PMC Article

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