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Association between ambient air pollution and birth weight in São Paulo, Brazil
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  • Published on:
    This may be due to increased testosterone...

    Dear Editor

    I suggest the findings of Gouveia et al[1] may be due to increased testosterone. It is my hypothesis that increased maternal testosterone causes prematurity and low birth weight.

    In rats, nitrogen dioxide increases maternal testosterone specifically.[2] It may be that increased exposure to nitrogen dioxide may increase prematurity and low birth weight because of increased maternal te...

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    Conflict of Interest:
    None declared.