New research states that Tylenol is not clearly linked to autism.

On November 10th, a review of evidence published in the British Medical Journal showed that there is no evidence to suggest a link between the use of acetaminophen during pregnancy and autism or attention deficit hyperactivity disorder in children. This review was a direct response to statements regarding the safety of acetaminophen use during pregnancy. Researchers stated that the credibility of the evidence reviews and study results related to this statement is "extremely low." They believe that any previously observed associations in research may be due to genetic and environmental factors within families.