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Neurobehavioral performance and work experience in Florida farmworkers.

Freya Kamel1, Andrew S Rowland, Lawrence P Park

  • 1Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709, USA. kamel@niehs.nih.gov

Environmental Health Perspectives
|November 5, 2003
PubMed
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Farmworkers exposed to neurotoxicants may experience cognitive and psychomotor deficits. Long-term farm work is linked to poorer neurobehavioral performance, even without pesticide poisoning history.

Area of Science:

  • Environmental Health
  • Neuroscience
  • Occupational Medicine

Background:

  • Farmworkers face significant occupational hazards, including exposure to neurotoxicants.
  • Neurotoxicant exposure can lead to adverse health outcomes, particularly affecting the nervous system.

Purpose of the Study:

  • To investigate the association between farm work and neurobehavioral performance in Florida farmworkers.
  • To compare neurobehavioral outcomes in farmworkers with a history of farm labor versus controls.

Main Methods:

  • A cohort of 288 farmworkers and 51 controls in central Florida were assessed.
  • Neurobehavioral performance was evaluated using a battery of eight tests.
  • Farm work history was collected via structured interviews, with analyses adjusted for confounders.

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Main Results:

  • Farm work was associated with poorer performance in digit span, tapping, Santa Ana test, and postural sway.
  • Performance deficits correlated with the duration of farm work exposure.
  • Associations were more consistent with fern work compared to nursery or citrus work.

Conclusions:

  • Long-term farm work experience is associated with measurable deficits in cognitive and psychomotor functions.
  • These deficits persist even in the absence of reported pesticide poisoning.
  • Findings highlight the chronic impact of farm labor on neurological health.