This article appeared in the New York Times.
For many it appeared to have been a study to disprove the effectiveness of a gluten free diet to treat Autism.
It was a study to show Autistic people had an average amount of gastrointestinal illnesses.
In any scientific test, there must be controls.
It was a small test group followed for 18 years.
I would be more interested in knowing if a larger test group of autistic children, (there are certainly enough to have a 5000 test group), might show significantly larger than normal amounts of gastrointestinal illnesses.
Where and how, were these test subjects found? ( a single location? one city?ethnic group?)
answer: The study subjects were 121 autistic children and 242 other children who were similar in age and sex. All were residents of Olmsted County, Minnesota, home to the Mayo Clinic. Comparing the cumulative incidence, (AS reported in the test subjects medical records), of gastrointestinal problems from birth until the late teens showed that the only significant differences between the two groups were in constipation and feeding issues.
How old were they at the start of the study?
These tests started 18 years ago. What differences would one see in a study started today?
On a less extreme curve than that of Autism, Celiac disease and gastrointestinal disorders are too, on the rise.
Perhaps the study done by the Mayo Clinic on the incidence of gastrointestinal disorders in Autistic populations would have a different outcome if were started today. By using a larger population for the study, where more attention is being paid by pediatricians to the digestive and intestinal problems in autistic children, we might see strong differences in this study and the one just completed. (Children that have been adversely effected by one of the Rotavirus vaccines, used after the study by the Mayo Clinic, which caused severe bowel problems, for example.)
BUT REGARDLESS... WE ARE MORE INTERESTED IN :
how gluten foods effect brain. "Endogenous neurotoxicity" Toxins can occur from substances produced within the body, known as endogenous neurotoxins. An example of an endogenous neurotoxin is the primary neurotransmitter glutamate, which, when levels reach too high, can result in excitotoxicity and cause neuronal death by apoptosis.
Foods can trigger the excess production of glutamate, much the same as a person's diet can trigger his body to manufacturer too much cholesterol. Eating large quantities of meat from cows,( that eat no cholesterol), can result in the excess of cholesterol in the body of the one consuming the meat.
Here are some leads for your research:
http://www.usatoday.com/news/health/2009-07-12-autism13_N.htm
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http://www.ageofautism.com/2009/07/a-clear-biomarker-for-autism-the-question-of-alterations-in-lipid-metabolism.html
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