A small study done at Arizona State University found higher levels of toxic metals in children with autism in comparison to normally developing children. Researchers found higher levels of lead, thallium, tin and tungsten in the blood and urine samples of children with autism.
The study also looked at the relationship between the levels of these metals and the severity of autism symptoms. Researchers found “between 38 to 47 percent of the variation of autism severity was associated with the level of several toxic”. The study suggests that if children with autism and higher levels of toxic metals undergo detoxification their symptoms may improve.
The study’s authors cautioned that more research needs to be done on the relationship between metal toxicity and autism. The study is published in the journal Biological Trace Element Research.
An earlier study published in 1995 found higher levels of toxic metals in the hair of children with autism. This study can be found at: http://www.safeminds.org/research/library/fido-el-saad-2005-toxic-trace-hair-kuuwait.pdf.
More information on this study and the source of the above quote can be found at http://www.inquisitr.com/641300/children-with-autism-have-higher-levels-of-toxic-metals-in-blood-and-urine/.