Reduced Levels of Mercury in First Baby Haircuts of Autistic Children

The mothers in the autistic group had significantly higher levels of mercury exposure through Rho D immunoglobulin injections and amalgam fillings than control mothers. Within the autistic group, hair mercury levels varied significantly across mildly, moderately, and severely autistic children, with mean group levels of 0.79, 0.46, and 0.21 ppm, respectively. Hair mercury levels among controls were significantly correlated with the number of the mothers’ amalgam fillings and their fish consumption as well as exposure to mercury through childhood vaccines, correlations that were absent in the autistic group. Hair excretion patterns among autistic infants were significantly reduced relative to control. These data cast doubt on the efficacy of traditional hair analysis as a measure of total mercury exposure in a subset of the population. In light of the biological plausibility of mercury’s role in neurodevelopmental disorders, the present study provides further insight into one possible mechanism by which early mercury exposures could increase the risk of autism. (Indicates more mercury went in then went out in autistic children) http://www.healing-arts.org/children/metal-metabolism.htm  

Holmes AS, Blaxill MF, Haley BE. Int J Toxicol. 2003 Jul-Aug; 22(4):277-85. 12933322 PubMed.

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