ECHO cohort studies find no link between autism and circumcision or pesticides

New research published in JAMA Pediatrics, utilizing data from the National Institutes of Health (NIH) ECHO cohort, has found no evidence linking neonatal male circumcision or pesticide exposure to autism spectrum disorder.

A study of nearly 2,800 boys across 14 ECHO sites found that 6% of circumcised males had autism compared to 9% of uncircumcised males, showing no significant association after adjusting for confounders. The findings address claims made by Health Secretary Robert F. Kennedy Jr., who suggested a link between circumcision, the use of acetaminophen during the procedure, and autism.

Additionally, a study involving over 3,000 mothers analyzed pesticide metabolites in urine samples during pregnancy. Researchers from NYU Langone found no connection between the levels of organophosphate pesticides detected and the development of autism-related traits in their children. These studies contrast with assertions by Kennedy that environmental toxins and specific medical procedures are primary drivers of rising autism diagnoses.