Paracetamol Use in Pregnancy Found Safe: No Link to Autism, ADHD, or Intellectual Disability

• What happened: A large systematic review confirms that paracetamol use during pregnancy is not associated with autism, ADHD, or intellectual disability in children.
• Why it matters now: Public concern has grown after previous reports suggested potential neurodevelopmental risks, prompting questions about the safety of a widely used medication.
• What changes for people: Pregnant individuals can safely use paracetamol for pain or fever without fear of long-term developmental impacts on their children.
• Who is affected: Expectant mothers, obstetricians, pediatricians, and public health professionals relying on evidence-based guidance for safe pregnancy care.

A new meta-analysis and systematic review, led by researchers at City St George's, University of London, analyzed 43 high-quality studies to assess the safety of paracetamol during pregnancy. The findings, published in The Lancet Obstetrics, Gynaecology & Women’s Health, represent the most comprehensive evaluation to date.

Large-Scale Analysis Across Hundreds of Thousands of Children

The study included sibling comparison data, a method that controls for genetic and family-related factors. In total, 262,852 children were assessed for autism, 335,255 for ADHD, and 406,681 for intellectual disability.

Results consistently showed no increased risk of these neurodevelopmental conditions in children whose mothers took paracetamol during pregnancy compared to those who did not.

Professor Asma Khalil, lead investigator and Consultant Obstetrician, stated:
"Previously reported links are likely explained by genetic predispositions or maternal factors such as fever or underlying pain, rather than the paracetamol itself. The message is clear—paracetamol remains a safe option during pregnancy when used as directed."

Study Strengths and Limitations

The review relied on the QUIPS tool to evaluate study quality, minimizing bias. Findings remained consistent in studies with low risk of bias and in long-term follow-ups exceeding five years.

Limitations included insufficient data to assess trimester-specific exposure, dosage frequency, or the sex of the child in sibling comparisons. Researchers recommend that future studies explore these variables for more nuanced guidance.

Implications for Maternal and Child Health

Paracetamol is the first-line treatment for pain and fever during pregnancy. Avoiding it unnecessarily can expose both mother and baby to risks from untreated fever or pain, including complications from high maternal temperature.

This evidence reinforces current guidelines from major medical organizations and aims to reassure healthcare providers and expectant mothers about safe use of paracetamol during pregnancy.