A new comprehensive report by McCullough Foundation reviews over 300 studies and claims routine childhood vaccination is the most significant preventable driver of autism

Earlier and later diagnosed autism have different underlying biological and developmental profiles," said Varun Warrier.

Autism spectrum disorder (ASD) was linked with prenatal exposure to two components of fine particulate matter (PM 2.5) air pollution, a study of 2.2 million Canadian births suggested. Prenatal exposure to sulfate and ammonium was associated with an autism diagnosis by age 5, reported Eric Lavigne, PhD, of Health Canada in Ottawa, and co-authors.