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Fluoridation and cancer mortality in Anglesey.

G W Griffith

    Journal of Epidemiology and Community Health
    |September 1, 1985
    PubMed
    Summary

    Water fluoridation does not appear to impact cancer mortality rates. A study comparing Anglesey to England and Wales found no evidence linking water fluoridation to cancer deaths.

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    Area of Science:

    • Public Health
    • Epidemiology
    • Oncology

    Background:

    • Water fluoridation is a public health measure implemented to prevent tooth decay.
    • Concerns have been raised regarding potential adverse health effects, including cancer.
    • Previous studies on the link between fluoridation and cancer mortality have yielded mixed results.

    Purpose of the Study:

    • To investigate the association between water fluoridation and cancer mortality.
    • To compare cancer mortality rates in a fluoridated area (Anglesey) with national rates (England and Wales).

    Main Methods:

    • Retrospective cohort study design.
    • Comparison of mortality data for specific cancer types (all sites, lung, stomach) between Anglesey and England/Wales.
    • Analysis of data from two distinct periods: pre-fluoridation (1949-53) and post-fluoridation (1979-83).

    Main Results:

    • No statistically significant difference in cancer mortality rates was observed in Anglesey compared to England and Wales.
    • Mortality rates for all cancer sites, trachea, bronchus, lung, and stomach cancers showed no evidence of being affected by water fluoridation.
    • The observed mortality patterns remained consistent across both the pre- and post-fluoridation periods.

    Conclusions:

    • The study found no evidence to support the hypothesis that water fluoridation influences cancer mortality.
    • Findings suggest that water fluoridation, as implemented in Anglesey, does not increase cancer risk.
    • Further research may be warranted to explore potential long-term or specific cancer type associations, although current evidence is negative.

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