RFK Jr.'s Unsupported Claims About Tylenol

Key Points:

• Health and Human Services Secretary Robert F. Kennedy Jr. called for retraction of a new Danish study published in JAMA Pediatrics that found no link between prenatal acetaminophen (Tylenol) use and autism, labeling the study "garbage" and alleging industry fraud without evidence.
• Scientists and experts refuted Kennedy’s claims, noting the study’s acknowledged limitation of relying on prescription data does not invalidate its findings; Denmark’s prescription-based acetaminophen use makes the data reliable, and no dose-response relationship was found.
• The Danish study analyzed health records of over 1.5 million children born between 1997 and 2022, concluding no association between acetaminophen use during pregnancy and later autism diagnoses, aligning with other recent international studies.
• Researchers emphasized that limitations in any single study are normal and do not justify retraction; Kennedy’s calls were described as politically motivated without legitimate scientific grounds, and no evidence of industry funding or fraud was found in the study.
• Experts highlighted that while acetaminophen is available over the counter in many countries, Denmark’s regulations mean most use is prescription-based, making prescription records a valid data source; overall, the broader scientific literature does not support a causal link between prenatal acetaminophen use and autism.