Chronic Stress and Diabetes Mellitus: Interwoven Pathologies

Area of Science:

• Endocrinology
• Neuroendocrinology
• Metabolic Science

Background:

• Stress response involves the hypothalamic-pituitary-adrenal (HPA) axis and sympathetic nervous system to maintain homeostasis.
• The HPA axis regulates glucocorticoid (cortisol) secretion through complex feedback mechanisms.
• Chronic stress can lead to HPA axis dysregulation and sustained elevation of glucocorticoids.

Purpose of the Study:

• To review the evidence linking stress-induced hypercortisolism to the development of Type 2 diabetes (T2D).
• To explore the metabolic consequences of elevated glucocorticoids.
• To assess the therapeutic potential of targeting stress-mediated glucocorticoid excess for T2D treatment.

Main Methods:

• Literature review of studies on stress, HPA axis function, glucocorticoids, and glucose metabolism.
• Analysis of the physiological and molecular mechanisms connecting chronic stress to metabolic dysfunction.
• Synthesis of evidence regarding the role of glucocorticoids in insulin resistance and inflammation.

Main Results:

• Chronic stress causes HPA axis dishabituation, leading to increased glucocorticoid and catecholamine release.
• Elevated glucocorticoids promote gluconeogenesis, impair glucose uptake, stimulate lipolysis, suppress insulin secretion, and induce insulin resistance and inflammation.
• These metabolic alterations contribute to the pathogenesis of Type 2 diabetes.

Conclusions:

• Stress-induced hypersecretion of glucocorticoids is a significant factor in the development of Type 2 diabetes.
• Targeting stress pathways and mitigating excessive glucocorticoid release may offer a novel therapeutic strategy for T2D.
• Restoring glucose homeostasis by managing stress-related endocrine changes is a promising approach.