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Health risks

J Longstreth1, F R de Gruijl, M L Kripke

  • 1Institute for Global Risk Research, Bethesda, MD 20817, USA. tigerr@cpcug.org

Journal of Photochemistry and Photobiology. B, Biology
|January 23, 1999
PubMed
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Ozone depletion increases health risks from ultraviolet B (UV-B) radiation, causing eye, immune, and skin damage. Alternatives to ozone-depleting substances may introduce new risks, requiring careful evaluation.

Area of Science:

  • Environmental Science
  • Public Health
  • Dermatology

Background:

  • Ozone depletion leads to increased environmental ultraviolet B (UV-B) radiation.
  • This increase poses significant health risks, primarily affecting the eyes, immune system, and skin.
  • The use of alternatives to ozone-depleting substances (ODSs) may introduce novel health concerns.

Purpose of the Study:

  • To summarize the health risks associated with ozone depletion, focusing on UV-B radiation effects.
  • To review current knowledge on ocular damage, immunosuppression, and skin carcinogenesis linked to UV-B exposure.
  • To briefly discuss the potential risks of ODS alternatives.

Main Methods:

  • Literature review and synthesis of existing scientific data on UV-B radiation effects.

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  • Analysis of quantitative risk estimates for UV-B-associated health outcomes.
  • Evaluation of toxicity data for ODS alternatives.
  • Main Results:

    • UV-B exposure causes acute effects like photokeratitis and chronic conditions including cataract, skin cancers (basal cell carcinoma, squamous cell carcinoma, melanoma), and pterygium/pinguecula.
    • UV-B exposure can suppress both local and systemic immune responses, potentially worsening infectious diseases and cancers.
    • While many ODS alternatives show low acute and moderate chronic toxicity, some raise concerns, necessitating careful handling.

    Conclusions:

    • Ozone depletion presents substantial risks to human health through increased UV-B radiation, impacting vision, immunity, and skin.
    • Further research is needed to quantify risks of immunosuppression and ODS alternatives.
    • Quantitative risk estimates suggest a peak in cataract and skin cancer incidence mid-century due to ozone depletion.