I was a complete skeptic regarding alternative treatments. I have studied Autism in my professional work and also have a son originally dx with Autism. I was so desperate to try anything. I began using fish oil shortly after my son was dx. In three months, he was talking so much more and he was beginning to display interest in reciprocal communication with his peers. He had only 10 - 15 words in his spoken vocabulary at age 2 years, 3 months. He rarely made eye contact and was not interested in any type of reciprocal communication. The leaps and bounds he made amazed the three professionals who dx him. He slowly got better. Now he is a very social little boy who has wonderful expressive language skills. He still seems to be on the spectrum but it's hardly noticeable unless you work with him. Lately I have been noticing that he is getting worse. He has also started to stutter. One week ago I started him on fish oil again and didn't tell my husband. He noticed today that my son hasn't been stuttering as much and some of his "cognitive inflexibility" features seem to be diminishing. I am really trying to analyze whether or not there is a placebo effect on my part working but I honestly don't think so. My husband noticed a difference and he didn't know I was giving my son anything. I will just continue to see what happens.
I am not saying this is the answer but it seems to have really helped my son. I don't believe fish oil can hurt and it certainly has helped my son!!
I would google "fish oil and autism," as there has been some research studies pertaining to this. I haven't had a chance to actually review these studies but it should be interesting