Children who are circumcised early have double the rate of autism, and it's highly likely because they're given Tylenol.

Several sources report on studies examining the relationship between early circumcision and autism spectrum disorder (ASD). One large Danish study found a 46% increased risk of ASD in circumcised boys, which is a significant but not a doubling of risk. Other expert analyses highlight that the absolute rates of ASD in circumcised children remain very low and that confounding factors may explain observed associations.sciencemediacentre.orgsciencemediacentre.orgexpert reaction to ritual circumcision and autismtelegraph.co.uktelegraph.co.ukCircumcision doubles autism risk, study claims

Regarding Tylenol (acetaminophen), multiple reputable sources emphasize that no causal link has been demonstrated between Tylenol use and autism, although some studies note correlations without establishing causation. The claim attributed to RFK Jr.factcheck.orgfactcheck.orgThe Facts Behind Claims on Autism, Tylenol and Folatenpr.orgnpr.orgThe science behind the correlation between autism and Tylenol : NPR+2 more repeats these assertions but lacks support from peer-reviewed research confirming either a doubling of autism rates or a causal role for Tylenol.

Additionally, some children diagnosed with ASD received circumcision after diagnosis, complicating causal interpretations.theautismdoctor.comtheautismdoctor.comAutism, ADHD and Circumcision Overall, the evidence suggests a complex picture with no definitive proof that early circumcision doubles autism risk or that Tylenol is a likely cause.