Does chronic stress and high cortisol lead to lower DHEA-S and reduced adrenal androgens?

Chronic stress and the resulting hypercortisolemia initiate a complex physiological reorganization of the adrenal cortex. While acute stress typically elevates both cortisol and dehydroepiandrosterone sulfate (DHEA-S), chronic exposure triggers a divergent shift characterized by sustained or elevated cortisol alongside a significant decline in adrenal androgen production.

Clinical and physiological findings

In individuals experiencing chronic stress, the hormonal profile often reveals a high cortisol-to-DHEA(S) ratio. Research indicates that while DHEA-S levels may initially spike in response to a stressor, prolonged activation of the hypothalamic-pituitary-adrenal (HPA) axis leads to a gradual reduction in basal DHEA-S concentrations.

• Hormonal divergence: Studies have shown that during states of chronic allostatic load, DHEA-S levels can drop by 20-40% compared to non-stressed counterparts, even when cortisol levels remain elevated or within the upper normal range.
• Age and sex considerations: In females, this decline can be particularly impactful as the adrenal glands are the primary source of circulating androgens. The reduction in DHEA-S is often most pronounced in individuals with chronic burnout or psychiatric conditions such as major depressive disorder.

Mechanistic explanations

The reduction in DHEA-S during chronic stress is driven by functional and structural remodeling of the adrenal glands, specifically within the zona reticularis.

• Zona reticularis atrophy: Chronic hypercortisolemia exerts negative feedback on the pituitary gland, suppressing adrenocorticotropic hormone (ACTH) pulsatility. This reduced ACTH drive leads to the preferential atrophy of the zona reticularis—the site of DHEA synthesis—while the cortisol-producing zona fasciculata remains relatively intact.
• Enzymatic shunting: The steroidogenic enzyme CYP17A1 possesses two distinct activities: 17α-hydroxylase (required for cortisol) and 17,20-lyase (required for DHEA). Chronic stress selectively downregulates 17,20-lyase activity, often through changes in cofactors like cytochrome b5 or altered phosphorylation. This effectively "shunts" precursors away from androgen synthesis and toward cortisol production.
• Sulfation capacity: Evidence suggests that chronic stress may also impair the activity of SULT2A1, the enzyme responsible for converting DHEA into its more stable sulfate form (DHEA-S), further lowering circulating levels.

Bottom line

Chronic stress and elevated cortisol are strongly associated with a decline in DHEA-S and reduced adrenal androgen production. This occurs because the body prioritizes glucocorticoid (cortisol) synthesis over androgens during prolonged stress, leading to structural atrophy of the adrenal zona reticularis and selective downregulation of the enzymes required for DHEA-S production.