RFK Jr has dishonestly portrayed the increase in autism diagnoses over the past 20 years as an increase in incidence of autism to justify his claim of an environmental cause for autism. Multiple published and refereed reports using twin pair studies show 60-90% heritability for autism, and those are probably underestimates. What changed in the […]

We’ve known for decades that the risk for autism is mostly heritable, i.e., genetics. Certain environmental inputs can enhance the expression of autistic traits, but the cause lies in genetics. “The rise in prevalence, many researchers say, is predominantly caused by an increase in diagnoses rather than a true rise in the underlying symptoms and […]