12/17/2025
A recent study has found that higher maternal cortisol levels during pregnancy may be associated with babies teething earlier than expected. Cortisol, often referred to as the stress hormone, influences fetal development in multiple ways, including growth and maturation of tissues and organs. Elevated cortisol levels in the mother can signal the baby’s body to accelerate certain developmental processes, potentially including the timing of tooth eruption.
Researchers observed that babies born to mothers with higher prenatal cortisol experienced their first teeth sooner than those whose mothers had lower cortisol levels. While early teething is generally harmless, it may reflect how prenatal stress subtly impacts developmental milestones. The findings highlight the interconnectedness of maternal health and infant growth, suggesting that hormonal fluctuations during pregnancy can have measurable effects on early childhood physiology.
Experts emphasize that this research is not a cause for alarm, but rather an insight into how maternal well-being influences infant development. Supporting maternal health through stress management, proper nutrition, and adequate rest may help ensure balanced fetal growth. Understanding the link between cortisol and teething also provides a window into broader prenatal influences on growth patterns, emphasizing the importance of maternal care for long-term child development.