Can higher cortisol and stress increase serum uric acid?

Elevated serum uric acid is the end product of purine catabolism, governed by the balance between metabolic production and renal excretion. Research into the relationship between cortisol and uric acid suggests that while the link is biologically plausible, the mechanisms are more clearly defined for purine production than for renal handling.

Clinical evidence and associations

Clinical observations and human studies demonstrate a consistent correlation between stress markers and uric acid levels.

• Stress markers: High-stress environments, such as those experienced by combat athletes, show concurrent rises in both cortisol and plasma uric acid.
• Pathological states: Patients with Cushing’s syndrome (hypercortisolism) frequently exhibit hyperuricemia, suggesting a systemic link between glucocorticoid excess and urate accumulation.
• Acute correlations: In acute conditions like gout flares, changes in urinary uric acid excretion have been significantly correlated with levels of bioactive urinary free cortisol.

Mechanistic explanations

The influence of stress on uric acid occurs through two primary physiological channels:

• Accelerated purine turnover: Cortisol induces a catabolic state to mobilize energy substrates. This increases the breakdown of ATP into adenosine monophosphate (AMP) and its subsequent degradation into hypoxanthine and xanthine. Stress conditions also promote the conversion of xanthine oxidoreductase (XOR) into its pro-oxidant form, xanthine oxidase (XO), which catalyzes the final steps of uric acid production.
• Renal urate handling: The impact of cortisol on renal transporters remains less clear. While glucocorticoids influence various renal functions (such as sodium/hydrogen exchange via NHE3), specific glucocorticoid response elements (GREs) have not been identified in the promoters of primary urate transporters like URAT1 (SLC22A12) or GLUT9 (SLC2A9). This suggests that any cortisol-driven renal retention may occur through indirect physiological pathways rather than direct transcriptional regulation.

Bottom line

Higher cortisol levels are plausibly linked to increased serum uric acid primarily through catabolic-driven purine turnover and the activation of xanthine oxidase. While renal retention is a major driver of hyperuricemia, a direct mechanistic link between cortisol and the regulation of specific renal urate transporters has not yet been established.