Paracetamol in Pregnancy: Uncertain Evidence, Certain Consequences.

This article examines claims that paracetamol during pregnancy causes autism. The authors found serious problems with the research that made these claims, including poor study methods and misleading conclusions. They explain how unclear scientific findings can be misused to create public confusion about medication safety during pregnancy.

This article critically examines a systematic review that claimed paracetamol use in pregnancy is linked to autism, which was cited by US President Trump in 2025. The authors identify significant methodological flaws in the original review, including selective reporting, inappropriate analytical frameworks, and reliance solely on observational studies without establishing causation. The article highlights how scientific uncertainty can be misrepresented in public health discussions, leading to confusion about paracetamol safety during pregnancy. This represents a critical analysis of research quality and scientific communication rather than new evidence about paracetamol-autism associations.

Clinicians should be aware of how methodologically flawed research can influence public perception of medication safety. The article emphasizes the need for rigorous evaluation of evidence quality before making clinical recommendations about paracetamol use during pregnancy.

This is a critical commentary rather than original research. The analysis is limited to evaluating an existing systematic review and does not present new empirical data about paracetamol use or autism outcomes.

Autism diagnoses have increased over the past decade, prompting debate on potential causes. In September 2025, US President Donald Trump claimed that paracetamol is a 'big factor' in autism, citing a systematic review based solely on observational studies. The review's selective reporting, methodological flaws (including applying an environmental health rather than evidence-based medicine framework) and lack of causal evidence provided weak justifications for its conclusions and have fuelled public confusion about paracetamol safety in pregnancy. This article critically appraises the review and examines how scientific uncertainty can be manipulated and amplified within broader public health domains.