Here is the link for the Study:
http://www.google.com/urlsa=t&rct=j&q=&esrc=s&source=web&cd=6&sqi=2&ved=0CF4QFjAF&url=http%3A%2F%2Fwww.autism.com%2Fari%2Fnewsletter%2F203%2Fpage5.pdf&ei=99wJUunbBoaSyAHwpYCoDg&usg=AFQjCNEfNn241jRozZlN2l4toPaM4zRfvw&bvm=bv.50500085,d.aWc
Hi, I have come across Autism, ADD, Tourette syndrome, Seizures and other difficult diagnoses and what I have read is that they all can be traced to Magnesium Deficiency.
Here is a very informative website on one of the many. I truly hope Mg could help your child. Mg takes time 6 to 12 months to get built up to normal levels in the body cells, so if you chose to follow this path, be patient. You will see improvement in time.
I would also encourage you to read Dr Mark Sircus book "Transdermal Magnesium" He also is on You Tube and google on Autism ,
Please do further search : Autism and Magnesium
Here is one Title for Search:
"Studies confirm benefits of vitamin B6/magnesium therapy for autism, PDD, and ADHD"
In a new report, French researchers confirm that megadose vitamin B6 and magnesium therapy markedly improves
communication and behavior and aids in normalizing biochemistry in children with autism spectrum disorders. A related report, this one from Japan, indicates that the benefits of B6 therapy are long-lasting.