Use of paracetamol during pregnancy and child neurological development

Area of Science:

• Obstetrics and Gynecology
• Developmental Pediatrics
• Pharmacology

Background:

• Paracetamol (acetaminophen) is the primary treatment for pain and fever in pregnant individuals.
• Recent studies suggest a potential link between prenatal paracetamol exposure and attention-deficit-hyperactivity disorder/hyperkinetic disorder (ADHD/HKD) or developmental concerns in children.
• Observed effects are generally weak to moderate, with study design limitations hindering causal inference.

Purpose of the Study:

• To evaluate the current evidence regarding the safety of paracetamol use during pregnancy.
• To assess the potential association between in utero paracetamol exposure and neurodevelopmental outcomes in children.
• To review findings from epidemiological and animal studies on paracetamol's effects on fetal development.

Main Methods:

• Review of recent epidemiological studies investigating prenatal paracetamol exposure and child neurodevelopment.
• Analysis of recent animal research examining the impact of therapeutic paracetamol doses on early development.
• Examination of potential biological mechanisms, including effects on neurotrophic factors and neurotransmitter systems.

Main Results:

• Epidemiological studies indicate a weak to moderate association between prenatal paracetamol use and ADHD/HKD or developmental issues.
• Animal studies suggest potential alterations in cognition and behavior following early developmental exposure to therapeutic paracetamol doses.
• Proposed mechanisms involve interference with brain-derived neurotrophic factor, neurotransmitter systems, and cyclooxygenase-2, but human relevance is uncertain.

Conclusions:

• Current evidence is insufficient to establish a causal link between prenatal paracetamol exposure and ADHD/HKD or adverse neurodevelopmental outcomes.
• Further well-designed cohort studies are required to confirm or refute the observed associations.
• Paracetamol remains the recommended first-line treatment for pain and fever in pregnancy based on existing knowledge.