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Chronic Fluoride Exposure and the Risk of Autism Spectrum Disorder

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  • Anna Strunecka

    (The Institute of Technology and Business, Okružní 517/10, 370 01 České Budějovice, Czech Republic)

  • Otakar Strunecky

    (The Institute of Technology and Business, Okružní 517/10, 370 01 České Budějovice, Czech Republic)

Abstract

The continuous rise of autism spectrum disorder (ASD) prevalent in the past few decades is causing an increase in public health and socioeconomic concern. A consensus suggests the involvement of both genetic and environmental factors in the ASD etiopathogenesis. Fluoride (F) is rarely recognized among the environmental risk factors of ASD, since the neurotoxic effects of F are not generally accepted. Our review aims to provide evidence of F neurotoxicity. We assess the risk of chronic F exposure in the ASD etiopathology and investigate the role of metabolic and mitochondrial dysfunction, oxidative stress and inflammation, immunoexcitotoxicity, and decreased melatonin levels. These symptoms have been observed both after chronic F exposure as well as in ASD. Moreover, we show that F in synergistic interactions with aluminum’s free metal cation (Al 3+ ) can reinforce the pathological symptoms of ASD. This reinforcement takes place at concentrations several times lower than when acting alone. A high ASD prevalence has been reported from countries with water fluoridation as well as from endemic fluorosis areas. We suggest focusing the ASD prevention on the reduction of the F and Al 3+ burdens from daily life.

Suggested Citation

  • Anna Strunecka & Otakar Strunecky, 2019. "Chronic Fluoride Exposure and the Risk of Autism Spectrum Disorder," IJERPH, MDPI, vol. 16(18), pages 1-21, September.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:18:p:3431-:d:267609
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    References listed on IDEAS

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    Cited by:

    1. Adriano Casaglia & Maria Antonietta Cassini & Roberta Condò & Flavia Iaculli & Loredana Cerroni, 2021. "Dietary Fluoride Intake by Children: When to Use a Fluoride Toothpaste?," IJERPH, MDPI, vol. 18(11), pages 1-14, May.

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