A 2015 study published in the Journal of the Royal Society of Medicine examining ritual circumcision in Denmark reported that boys who had undergone circumcision were more likely to be diagnosed with autism spectrum disorder by age 10 compared with uncircumcised boys.
January 01, 2015
high
study_finding
Epidemiological association reported in the study; association does not establish causation
The authors of the 2015 Journal of the Royal Society of Medicine study stated they had no data on painkillers or anesthetics used during circumcision and therefore could not assess whether analgesic use, such as acetaminophen, was linked to autism.
January 01, 2015
high
study_limitation
Acknowledged limitation of the 2015 circumcision-autism study