Sex Differences in Stress Response and Major Depression

Major depression is nearly twice as prevalent in women as in men, a disparity that emerges during adolescence and endures throughout the lifespan. Research reveals that sex hormones, particularly oestrogens and progesterone, interact with the hypothalamic–pituitary–adrenal axis to modulate stress sensitivity. Women exhibit greater psychological distress in response to psychosocial challenges yet often display blunted neuroendocrine outputs of cortisol compared with men of equivalent depressive status. At a neural level, sex-specific patterns of gene expression within limbic and reward circuits contribute to divergent trajectories of vulnerability and resilience. Epigenetic mechanisms further amplify sexual dimorphism by altering chromatin states in stress-responsive regions of the brain. These multilayered processes underpin critical differences in symptomatology, course and treatment response, highlighting the need for tailored prevention and intervention strategies that account for the interplay between sex, neuroendocrine regulation and neural circuitry.

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Sex Differences in Stress Response and Major Depression publication trend

The graph below shows the total number of articles in sex differences in stress response and major depression across all publications each year (not limited to Nature Index journals).

Technical terms

HPA axis: The network of interactions between the hypothalamus, pituitary gland and adrenal cortex that governs stress hormone release.

Cortisol: A glucocorticoid hormone released by the adrenal glands in response to stress, central to energy regulation and immune modulation.

Sub-chronic variable stress (SCVS): An experimental paradigm in which animals are exposed to diverse stressors over several days to model chronic stress effects.

β-oxidation: A metabolic process in which fatty acids are broken down in mitochondria to generate energy, often upregulated under stress.

Dopamine transporter (DAT): A presynaptic protein responsible for dopamine reuptake from the synaptic cleft, influencing dopaminergic signalling and stress resilience.

References

1. Sex differences in mood disorders: perspectives from humans and rodent models. Biology of Sex Differences (2014).
2. Hormonal regulation of circuit function: sex, systems and depression. Biology of Sex Differences (2019).
3. Sex Differences in Nucleus Accumbens Transcriptome Profiles Associated with Susceptibility versus Resilience to Subchronic Variable Stress. Journal of Neuroscience (2015).
4. Sex, stress, and epigenetics: regulation of behavior in animal models of mood disorders. Biology of Sex Differences (2013).
5. Psychoneuroendocrine stress response in female and male youth with major depressive disorder. Journal of Child Psychology and Psychiatry (2025).
6. Non-Targeted Metabolomics Investigation of a Sub-Chronic Variable Stress Model Unveils Sex-Dependent Metabolic Differences Induced by Stress. International Journal of Molecular Sciences (2024).
7. Genetic loss of the dopamine transporter significantly impacts behavioral and molecular responses to sub-chronic stress in mice. Frontiers in Molecular Neuroscience (2024).