Fine example of reporting environment's role in autism.

A story by the San Francisco Chronicle covers two recently published studies examining how environmental factors impact autism. One of these studies examined twins; the other explored the role of antidepressants in the disorder. 

Reporter Erin Allday did a commendable job presenting the history of genetics and autism research and the methods and results of the new twin study. She also concisely explained the background and rationale for conducting twin studies. Finally, she provided an illustrative example by tying in the results of another new study that suggests conceptional antidepressant use may increase the risk of autism.

Autism is a complex disorder characterized by poor social communication, repetitive behaviors and problems with social interactions. Previous studies of identical and fraternal twins suggest that autism was almost an entirely genetic disease and that environment factors played little, if any role. The problem is that subsequent studies have not consistently identified genetic mutations associated with autism.

Recent studies suggest that the role of genetics in the development of autism is much more complex than originally thought.  This means it might not be a panacea for autism. Other new studies have found that environmental factors are important in the development of autism.

As our understanding of autism improves, this news story will likely be the first in a line of stories showing that environmental factors are important determinants of autism.

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Based on a work at www.environmentalhealthnews.org.