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      • The non-genetic factors that could cause autism include exposure to prenatal risk like use of psychiatric drugs by the mother during pregnancy, or bleeding or diabetes in either parent. Infectious conditions that reduce the mother’s immune system or lack of vitamin D may also cause autism, though more proof of these is needed.
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    What caused my child's autism?

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  2. Jul 04, 2011 · A new Stanford University School of Medicine study of twins suggests that non-genetic factors play an unexpectedly large role in determining autism risk, turning upside down recent assumptions about the cause of this common, disabling developmental disorder. From prior studies of shared autism in twins, scientists had estimated that 90 percent of autism risk was attributable to genes and only 10 percent to non-genetic environmental factors.

  3. It is also likely that there is not a single cause for autism, but rather that it results from a combination of causes. Scientists are studying some of the following as possible causes of or contributors to ASD. Genes and ASD Interactions between Genes and the Environment Other Biological Causes Citations Landrigan, P. J. (2010).

  4. A common question after an autism diagnosis is what is the cause of autism. We know that there’s no one cause of autism. Research suggests that autism develops from a combination of genetic and nongenetic, or environmental, influences. These influences appear to increase the risk that a child will develop autism. However, it’s important to keep in mind that increased risk is not the same as cause. For example, some gene changes associated with autism can also be found in people who don ...

  5. Jan 17, 2022 · They learned that children with and without diagnoses have approximately double the rare variant variation inherited by their fathers as expected. The researchers found, however, that rare variants that occur within the mother’s genes contribute little or no to the development of enced from mothers make a minimal contribution to autism, they found.

  6. The non-genetic factors that could cause autism include exposure to prenatal risk like use of psychiatric drugs by the mother during pregnancy, or bleeding or diabetes in either parent. Infectious conditions that reduce the mother’s immune system or lack of vitamin D may also cause autism, though more proof of these is needed.

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