February 2024 in “Psychoneuroendocrinology” This study observed that higher anxiety levels in pregnant individuals are negatively correlated with neonatal hair cortisol, suggesting that increased anxiety during pregnancy may affect fetal cortisol accumulation, which is important for fetal development and associated with birth outcomes and cognitive function.
February 2024 in “Psychoneuroendocrinology” In this study, researchers found that higher levels of general and pregnancy-related anxiety during gestation were negatively correlated with neonatal hair cortisol levels, suggesting that increased maternal anxiety may alter fetal cortisol exposure, which is important for fetal development.
February 2024 in “Psychoneuroendocrinology” This study found that among mother-infant pairs during the COVID-19 pandemic, lower maternal hair cortisol concentrations during pregnancy, combined with higher levels at six weeks postpartum, were associated with poorer infant developmental outcomes at six months.
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October 2008 in “Psychoneuroendocrinology” This study suggests that cortisol measured in human hair can effectively reflect increased production for up to six months, but its retrospective accuracy may be limited due to rapid decline in levels.
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December 2021 in “American Journal of Obstetrics and Gynecology” This study observed that hair cortisol levels increased during pregnancy and positively correlated with certain systemic cytokines postpartum, suggesting potential associations with perinatal outcomes.