Many parents who already have an autistic child wonder if their next pregnancy will bring forth another for them to love, cherish, and become utterly frustrated over, given that the prevalence of siblings with mental disabilities is high. With all the problems a typical child brings to the world with it, one diagnosed with autism almost seems to count as having 3 or more at a time.
Autism is a genetic disorder. Now, there may be theories or individuals who counter this fact, but the truth is that between twin studies and research on genetic markers, there cannot be another way of looking at it. Environmental factors obviously do come into play. After all, cities full of pollution increase the risk of having an autistic child as much as, if not more than, gaining excessive amounts of weight during pregnancy. Some of the strangest or sometimes rather likeliest things connected to autism include: