Research
Hormonal
Chronic stress and insomnia create a vicious cycle where sleep loss further activates the HPA axis and immune system, exacerbating stress sensitivity.
Chronic insomnia is not just a symptom of stress; it is a cause of further stress. To break the cycle, you must address the physiological hyperarousal (high cortisol, high heart rate) that persists even when you are not consciously stressed.
GoodSupportsHIGH confidence
Also, insomnia causes a vicious circle of stress-insomnia by further activating the HPA system. Especially, chronic stress can cause continuous hippocampus-related memory system fatigue by up-regulating the HPA system.
Why this rating
Based on a review of multiple studies linking sleep loss to HPA activation.
Source
Stress and Sleep Disorder
Kuem Sun Han et al. · Experimental Neurobiology · 2012
DOI 10.5607/en.2012.21.4.141
narrative_reviewCited 307×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Psychological stress activates the hypothalamic-pituitary-adrenal (HPA) axis and sympathetic nervous system, leading to hyperarousal, elevated cortisol, and sleep-onset insomnia.Good
- Cytokines (IL-1beta, TNF) regulate sleep homeostasis, and stress-induced immune activation can disrupt sleep by altering cytokine levels.Good
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