For well over a decade, researchers have looked for a “smoking gun” to help explain the growing incidence figures for autism.  On that count, the jury is still out.  Many feel the spike is due to different labeling systems and the rate of autism has held steady.  Certainly, the whole vaccine theory has been discredited.

Here’s a more plausible theory, the incidence rise might track back to chemicals that were banned back in the 70’s.  Hold on, you might ask, if the chemicals have been banned for 40 years, shouldn’t the incidence rates go down?  Unfortunately, just because the chemicals were banned doesn’t mean they’re not still in the ecosystem.

The Drexel team found that children born after being exposed to the highest levels of organochlorine chemicals during their mother’s pregnancy were roughly 80% more likely to be diagnosed with autism when compared to individuals with the very lowest levels of these chemicals. 

http://www.genengnews.com/gen-news-highlights/autism-risk-linked-to-banned-chemicals-not-vaccines/81253124/