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Multiple sclerosis and ionizing radiation.

O Axelson1, A M Landtblom, U Flodin

  • 1Division of Occupational and Environmental Medicine, Department of Health and Environment, Linköping University, Linköping, Sweden. olav.axelson@ymk.liu.se

Neuroepidemiology
|August 8, 2001
PubMed
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Ionizing radiation exposure, including X-rays and radiological work, may contribute to developing multiple sclerosis (MS). This study found increased odds of MS with such exposures, suggesting a potential link.

Area of Science:

  • Neurology
  • Environmental Health
  • Radiation Oncology

Background:

  • Multiple sclerosis (MS) etiology is complex, potentially involving environmental triggers that damage the blood-brain barrier and initiate autoimmune responses.
  • Investigating environmental exposures like radiation is crucial for understanding MS pathogenesis.

Purpose of the Study:

  • To assess the association between exposure to ionizing radiation (X-ray examinations, radiological work, radiation treatment) and the risk of developing multiple sclerosis (MS).

Main Methods:

  • A pooled analysis of 174 MS cases and 815 population controls from two case-control studies.
  • Exposure to X-ray examinations, radiological work, and ionizing radiation treatment was assessed via questionnaires.

Main Results:

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  • Odds ratios (OR) for radiological work and X-ray examinations were 4.4 (95% CI, 1.6-11.6) and 1.8 (95% CI, 1.2-2.6), respectively.
  • Five MS cases, but no controls, reported treatment with ionizing radiation in one study.

Conclusions:

  • Findings suggest ionizing radiation may be a contributory factor in the development of multiple sclerosis in some individuals.
  • Further research into the role of environmental radiation exposure in MS etiology is warranted.