If a child is found to have too much metal in the body, it can either be caused by environmental factors or it can be genetic. High levels of metal can disrupt the brain and nervous systems. Thus resulting in symptoms that mirror those of autism.
Heavy Metals
In children who are susceptible and lack the genetic ability to naturally excrete metals from their bodies, a build-up of metals can lead to neurodevelopmental disorders. These heavy metals displace minerals that are required for normal body functions. For example, lead replaces calcium. Heavy metals can enter the body through any of the following:
- fish
- lead-based paint
- power-plant emissions
- vaccines
- cigarette smoke
- well or tap water
- dental fillings
- hot tubs or pools treated with copper sulfate
- soil
Research shows that autistic children have lower rates of glutathione and other proteins that help rid the body of heavy metals. Glutathione and proteins bind to metals and help carry them from the body through urine.
It is important to note, like the discussion on vaccines, that the damage from over-exposure to heavy metals has a higher chance of causing damage in children who already are predisposed to autoimmunity. Heavy metals can make viral or bacterial infections more damaging and chronic.
Testing for Toxic Levels
Doctors can run a provocation test to check for metal toxicity. In this testing process, the doctor gives a child a dose, or several doses, of a chelator that will pull metal from the body. Urine is collected before and after the test which is analyzed. The accuracy of this test is questioned, since children who would potentially benefit from treatment often do not get positive test results.
Testing hair, blood, and urine are more traditional ways to test for heavy metals. These tests are most accurate with the heaviest metals. However, if exposure occurred too far in the past, these types of tests are not accurate. The length of hair determines the time period that is being tested; the longer the hair, the farther back the exposure time. When metal exposure is too far in the past, the metals move into the tissue. Detecting metal levels is a difficult task due to its ability to hide within the body.
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