A 15-year-old autistic boy had one tissue sample with levels of aluminum 22 times higher than those found in healthy individuals. Researchers suggest that childhood vaccines are a potential source of the toxic metal.
By Celeste McGovern
In what scientists report as the first study of its kind, the brains of five deceased individuals who were diagnosed with Autism Spectrum Disorder were found to contain among the highest levels of the toxic metal aluminum ever recorded.
Each donor had at least one brain tissue sample with extraordinarily high aluminum content, the team of scientists from Keele University in Staffordshire and the Department of Clinical Neuropathology at Kings College Hospital in London reported in the study published this week in the Journal of Trace Elements in Medicine and Biology. The researchers examined tissue samples from four different areas of the brains of autistic donors provided by the Oxford Brain Bank.
Compared to previous measurements of human brain aluminum content which have defined measurements of less than 1.00 microgram/gram dry weight as “pathologically benign,” (as opposed to “normal”) about 67% of the sampled tissues had an aluminium content considered as “pathologically significant” with measurements of greater than 3.00 micrograms/gram.
Highest readings ever
“The brains of all five individuals had at least one tissue with a pathologically-significant content of aluminium,” the study reports. Four of the five individuals (four males and a female) had at least one tissue with an aluminium content greater than 5.00 micrograms dry weight. The four male donors had significantly higher concentrations of brain aluminium than the single female donor with values as high as 17.10, 18.57 and 22.11 micrograms/gram. The highest measurement of 22.11 was taken in one of the three samples from the occipital lobe of a 15-year-old boy.
“These are some of the highest values for aluminium in human brain tissue yet recorded and one has to question why, for example, the [mean] aluminium content of the occipital lobe of a 15-year-old boy would be 8.74 micrograms per gram dry weight,” the study states.
Aluminum’s toxicity to the brain and nervous system has been well documented for more than a century…