Autism Prevalence Increase Questioned
BACKGROUND A couple of days ago (June 12) I posted Autism Prevalence Increasing. The article drew attention to a post by Kelly Brogan, MD, called See No Evil, Hear No Evil which had appeared on Mad in America on June 9. Dr. Brogan’s article had cited an alarming increase in the incidence of autism over the past few decades, and mentioned some possible causative factors. I checked the figures against the DSM and CDC prevalence estimates and found they were broadly in line. I mentioned the possibility that diagnostic expansion, particularly as embracing milder presentations, might be a confounding factor, but that given the reported increase (1 in 5000 to 100 in 5000) over 38 years, I expressed the view that this was a bit of a stretch. ...