My 4yo son has autism, I don't thing that antibiotics and preservatives increase the chances of being affected with autism, I do however feel that the rounds of childhood immunization shots are linked to autism.
For us it was like the sparkle left Simons eyes one day and he never came back. He was a typical 2 year old then BAM different little boy. He is delayed in his social skills, reclusive, has a VERY high tolerance for pain (he can injure himself and recover from the pain quickly which is not good when you hit your head on the hearth of the fireplace OUCH, 4 stitches and it didn’t look bad to me, good thing he has a great mommy
Some may argue the point about the immunizations but the ever increasing rate of autism is of epidemic proportions IMO. Simon also has a twin brother Elijah (fraternal twins) who is typical, had the same shots at the same time but is fine, go figure, I still feel there is a link and somebody is covering something up.