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What happened later to the lithium babies? A follow-up study of children born without malformations
Insights
Lithium exposure during early pregnancy did not increase physical or mental abnormalities in children not born with birth defects. Follow-up data from the Lithium Baby Register show no increased anomaly frequency in lithium-exposed children compared to siblings.
Area of Science:
- Obstetrics and Gynecology
- Pediatric Medicine
- Pharmacology and Toxicology
Background:
- Lithium use during pregnancy has raised concerns regarding potential teratogenic effects.
- Previous studies suggested an increased risk of congenital malformations in infants exposed to lithium.
- The Lithium Baby Register was established to investigate these risks.
Purpose of the Study:
- To assess the physical and mental development of children exposed to lithium in the first trimester.
- To determine if lithium exposure is associated with increased anomalies in children without congenital malformations at birth.
- To compare the development of lithium-exposed children with their unexposed siblings.
Main Methods:
- Questionnaire follow-up of children born to mothers treated with lithium during pregnancy.
- Examination of 60 lithium-exposed children who were not malformed at birth.
- Comparison of physical and mental development with a control group of siblings not exposed to lithium.
Main Results:
- No increased frequency of physical anomalies was observed in lithium-exposed children.
- No increased frequency of mental anomalies was observed in lithium-exposed children.
- Developmental outcomes in lithium-exposed children did not differ significantly from their siblings.
Conclusions:
- Lithium exposure during the first trimester of pregnancy does not appear to increase the risk of physical or mental anomalies in children without congenital malformations at birth.
- The findings suggest that lithium may be safer than previously thought for fetal development when considering children without initial malformations.
- Further research may be warranted to fully elucidate the long-term developmental effects of prenatal lithium exposure.
Abstract:
The Lithium Baby Register was founded in 1968 to determine the frequency of abnormalities among children born to mothers who were given lithium during the first trimester of pregnancy. Previous studies have revealed an increased frequency of congenital malformations, possibly due to teratogenic action of lithium. The present report is a questionnaire follow-up of the physical and mental development of lithium children who were not malformed at birth. Sixty lithium children were examined; their siblings, who had not been exposed to lithium during fetal life, served as a control group. The data obtained do not reveal any increased frequency of physical or mental anomalies among the lithium children.