Endocrine Transitions and Cognitive-Emotional Regulation in Postpartum Depression

The postpartum period represents one of the most rapid periods of endocrine and psychological change in the human lifespan, involving abrupt shifts in reproductive hormones alongside alterations in stress regulation, cognition, emotion, and social behavior. Although postpartum psychology has been extensively studied through depression, anxiety, and maternal mood, considerably less is known about how postpartum endocrine changes interact with specific cognitive-emotional processes underlying these conditions. Existing research has examined hormonal fluctuations, postpartum psychiatric symptoms, and cognitive functioning largely as separate domains, while evidence directly connecting hormonal production with cognition in women experiencing clinically diagnosed postpartum depression remains scarce and heterogeneous. This project asks whether changes in the postpartum endocrine environment are associated with specific alterations in cognitive and emotional regulation rather than simply with broad measures of depressive symptomatology. The literature review will examine studies spanning reproductive endocrinology, cognitive neuroscience, clinical psychology, psychiatry, and psychoneuroendocrinology while comparing evidence on attention, memory, emotional regulation, threat processing, rumination, and stress responsiveness. Particular emphasis will be placed on estrogen, progesterone, allopregnanolone, cortisol, and oxytocin, as well as the temporal relationship between hormonal changes and psychological outcomes following childbirth. The group will synthesize longitudinal, neuropsychological, neuroimaging, and clinical studies to determine whether existing evidence supports specific mechanistic relationships between postpartum endocrine transitions and cognitive-emotional functioning or instead reflects nonspecific associations with mood disturbance. By integrating endocrinological and psychological literature that has rarely been examined together, the review aims to clarify an understudied component of postpartum mental health while identifying the methodological and mechanistic gaps that could guide future longitudinal research.