TY - JOUR

T1 - The cortisol awakening response is blunted in healthy women early postpartum

AU - Høgh, Stinne

AU - Lange, Emilie

AU - Høgsted, Emma S.

AU - Larsen, Kristian

AU - Hegaard, Hanne K.

AU - Borgsted, Camilla

AU - Frokjaer, Vibe G.

N1 - Publisher Copyright: © 2024 Elsevier Ltd

PY - 2024

Y1 - 2024

N2 - Introduction: The dynamic capacity of the hypothalamic-pituitary-adrenal (HPA) axis supports healthy adaptions to stress and play a key role in maintaining mental health. Perinatal adaptations in the HPA-axis dynamics in terms of the Cortisol Awakening Response (CAR), may be involved in dysregulation of perinatal mental health. We aimed to determine if CAR and absolute evening cortisol early postpartum differed from non-perinatal women and evaluate the association between the CAR and maternal mental well-being. Methods: The CAR was computed as the area under the curve with respect to increase from baseline from serial home-sampling of saliva across 0–60 minutes from awakening. We evaluated differences in CAR and absolute evening cortisol between postpartum women (N=50, mean postpartum days: 38, SD: ±11) and non-perinatal women (N=91) in a multiple linear regression model. We also evaluated the association between CAR and maternal mental well-being in a multiple linear regression model. Results: We found that healthy postpartum women had a blunted CAR (p<0.001) corresponding to 84% reduction and 80% lower absolute evening cortisol (p<0.001) relative to non-perinatal healthy women. In the postpartum group, there was a trend-level association between lower CAR and higher scores on the WHO Well-Being Index (WHO-5) (p=0.048) and lower Edinburgh Postnatal Depression Scale (EPDS) scores (p=0.04). Conclusion: Our data emphasize the unique hormonal landscape during the postpartum period in terms of blunted CAR and lower absolute evening cortisol in healthy women early postpartum compared to non-perinatal. Our findings show a potential association between a reduced CAR and improved mental well-being during early motherhood, which suggests that reduced CAR might reflect healthy adjustment to early motherhood.

AB - Introduction: The dynamic capacity of the hypothalamic-pituitary-adrenal (HPA) axis supports healthy adaptions to stress and play a key role in maintaining mental health. Perinatal adaptations in the HPA-axis dynamics in terms of the Cortisol Awakening Response (CAR), may be involved in dysregulation of perinatal mental health. We aimed to determine if CAR and absolute evening cortisol early postpartum differed from non-perinatal women and evaluate the association between the CAR and maternal mental well-being. Methods: The CAR was computed as the area under the curve with respect to increase from baseline from serial home-sampling of saliva across 0–60 minutes from awakening. We evaluated differences in CAR and absolute evening cortisol between postpartum women (N=50, mean postpartum days: 38, SD: ±11) and non-perinatal women (N=91) in a multiple linear regression model. We also evaluated the association between CAR and maternal mental well-being in a multiple linear regression model. Results: We found that healthy postpartum women had a blunted CAR (p<0.001) corresponding to 84% reduction and 80% lower absolute evening cortisol (p<0.001) relative to non-perinatal healthy women. In the postpartum group, there was a trend-level association between lower CAR and higher scores on the WHO Well-Being Index (WHO-5) (p=0.048) and lower Edinburgh Postnatal Depression Scale (EPDS) scores (p=0.04). Conclusion: Our data emphasize the unique hormonal landscape during the postpartum period in terms of blunted CAR and lower absolute evening cortisol in healthy women early postpartum compared to non-perinatal. Our findings show a potential association between a reduced CAR and improved mental well-being during early motherhood, which suggests that reduced CAR might reflect healthy adjustment to early motherhood.

KW - Cortisol

KW - Cortisol Awakening Response

KW - Hypothalamic-Pituitary-Adrenal (HPA) axis

KW - Postpartum depression

KW - Postpartum well-being

KW - Stress hormone dynamics

U2 - 10.1016/j.psyneuen.2024.107048

DO - 10.1016/j.psyneuen.2024.107048

M3 - Journal article

C2 - 38657341

AN - SCOPUS:85190816075

VL - 165

JO - Psychoneuroendocrinology

JF - Psychoneuroendocrinology

SN - 0306-4530

M1 - 107048

ER -