THE IP BLIP AND BATTLE OVER MERCURY AND AUTISM
By Mary Webster
During the last several weeks, Mark Blaxill has shared with us his commentaries on the reanalysis of a study originally published by Ip et al in 2004 in the Journal of Child Neurology. (HERE and HERE) You may recall that a pair of researchers from the University of Northern Iowa, Catherine DeSoto and Robert Hitlan, discovered serious flaws in the study and took their concerns to Dr. Roger Brumback, Editor-in-Chief of the journal.
To his credit, Dr. Brumback not only asked DeSoto and Hitlan to re-evaluate the data from the original study, he published their analysis along with a candid explanation of the errors Ip and his colleagues made. In the spirit of full disclosure, Dr. Brumback also included in his note the raw data from that study.
As Mark pointed out, the original researchers made errors that were not simply typographical in nature, they also committed grievous mistakes in analyzing the data and in the conclusions they drew from the studies' results. DeSoto and Hitlan found that the study demonstrated quite convincingly that the children with autism were excreting less of the mercury to which they were exposed and children with autism had more mercury in their blood than the controls. These findings stand in stark contrast to those of the study's original authors who claimed, "…the results from our cohort study … indicate that there is no causal relationship between mercury as an environmental neurotoxin and autism."
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