Studies have shown that a child that is born in a family with an autism history is at a higher chance of being autistic than a child that has none. However, this gene is not found in the parental genome.
Most of the environmental risk theories are mostly related to the prenatal environment. Some of the factors may include foods that are ingested, diseases, some drugs, pesticides and other aerosols, alcohol and illicit drugs and vaccines. The age of the mother may also be a cause with those that are advanced being at higher risk.
In this article they belief that both genetic and environment play a major role in autism, in most families which have an autistic child, a parents or relative shows impairments, mild or extreme, in their social life and also in communication. Emotional disorders like depression have also been linked with autism in families. According to Arthur, there are abnormal levels of neurotransmitters in the brain of an autistic. This shows that autism could be as a result of normal brain development disruption during fetal development. (Schoenstsdt, 2008)
However, an article by author Gregg Easterbrook claims that watching too much television at a young age is a cause of autism among children. (Easterbrook, 2006). This research was based on studies that most families with an autistic child own cable. Therefore, this research bases the environment as a cause to autism.
Easterbrook’s conclusion that TV can be cause of autism was entirely based on studying the cable subscription data. They reasoned that since many houses had cable, most of the children were watching. This is just an unresearched assumption which does not serve as a logical explanation. We also see the same in Arthur’s article where he says that depression is a cause. He has no medical explanation of this which is quite clear that it is based on reason