Autism

This is such a touchy subject I know. But I have to admit it is something I fear. I just can not believe that with our medical industry we have yet to come up with a reason for its cause it's insane? Right? Does anyone have any inside information? Or thoughts on its cause? Its being diagnosed so often now. It scares me. 
I also do not want to offend anyone who has a child with autism, I have had many students with it, functioning in class just like my other kiddos. I will love my child regardless I just want their life to be as easy (medically) as possible.