Not Broken, Just Sensitive- A Systematic Review of Hormones, Mood and the Female Mind Across the Reproductive Lifespan

Abstract

Background: Across the reproductive lifespan, women repeatedly describe a lived experience that clinical medicine has been slow to validate: predictable windows of time in which mood, sleep, and cognition shift in step with reproductive hormones, followed by a return to baseline once those hormones stabilise. For decades this experience was dismissed as excess emotionality; contemporary neuroendocrinology instead points to differential brain sensitivity to entirely normal hormonal fluctuations.
Objective: To synthesise the evidence for a hormone-sensitivity model of mood across four windows — the menstrual cycle (premenstrual syndrome and premenstrual dysphoric disorder), pregnancy and the postpartum period, the perimenopausal transition, and menopause — and to critically evaluate what this model does and does not explain.
Methods: A structured search of PubMed and Google Scholar (inception to September 2026) covering neuroendocrinology, reproductive psychiatry, and clinical guideline literature was synthesised narratively, anchored by landmark experimental studies establishing the sensitivity paradigm.
Results: Convergent evidence from ovarian-suppression and hormone add-back trials, allopregnanolone-GABA-A receptor pharmacology, and cellular transcriptomic studies of the ESC/E(Z) gene complex indicates that affected women have normal circulating hormone levels but an intrinsically altered neural and cellular response to their fluctuation. This sensitivity framework explains premenstrual dysphoric disorder, a meaningful subset of postpartum depression, and perimenopausal depressive episodes, and has already yielded targeted neurosteroid therapeutics. Conclusion: Hormones do not explain every difficult emotion in a woman's life, and this review argues explicitly against over-medicalising ordinary distress. But for a biologically definable subset of women, recognising heightened hormone sensitivity, rather than hormone abnormality, reframes a century of dismissal into a testable, treatable clinical model.