Hair Mercury Levels in Autism
Hair Mercury Levels in Autism
|
|
|
Reported rates of autism have increased sharply in the United States and the United Kingdom. One possible factor underlying these increases is increased exposure to mercury through thimerosal-containing vaccines. In order to measure mercury levels, first baby haircut samples were obtained from 94 children diagnosed with autism and 45 age- and gender-matched controls. Hair mercury levels in the autistic group were 0.47 ppm versus 3.63 ppm in controls, a significant difference. 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 light of the biological plausibility of mercury's role in neurodevelopmental disorders, this study provides further insight into one possible mechanism by which early mercury exposures could increase the risk of autism - International Journal of Toxicology, August 2003 |
Copyright © 2003 by Cranial Subluxations.com, John Blye, DC, and Lynn Bamberger, DC. All rights reserved. Duplication without express written permission is strictly forbidden. Disclaimer: All material provided in this web site is provided for informational purposes only. Consult your own physician regarding the applicability of any opinions or recommendations with respect to your symptoms or medical condition. Acknowledgements: Photography by Paula Kliewer (Learn more) -- Web Design and Writing by Lynn Bamberger, DC |