How does stress contribute to sleep disorders?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Stress is a leading cause of sleep problems. When you're stressed, your brain releases cortisol and other hormones that keep your nervous system on high alert, making it difficult to relax, fall asleep, and stay asleep. Over time, chronic stress can trigger sleep disorders like insomnia.

If stress is affecting your sleep, understanding the root cause is the first step to better rest. A free, instant, online symptom check can help you identify what's driving your symptoms and guide you toward the right next steps—no appointment or sign-up required.

Reviewed for medical accuracy: 07/20/2026

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Explanation

Stress affects sleep by making it hard for the brain to relax, which can lead to sleep disorders. When you are stressed, certain chemicals in the brain, like norepinephrine, become more active. This makes it difficult for your body to calm down and fall asleep.

How Stress Affects Sleep

Brain Chemicals: Stress increases certain brain chemicals that keep you alert. This makes it hard to relax and fall asleep.
Hypothalamus Role: The hypothalamus, a part of the brain, is involved in managing stress and sleep. When stressed, this part of the brain can make it harder to sleep.

Consequences

Sleep Disorders: Over time, stress can lead to sleep disorders like insomnia, where you have trouble falling or staying asleep.

If stress is affecting your sleep, it might be helpful to talk to someone or seek support. To better understand your symptoms and get personalized guidance, try our free AI symptom checker today.

(References)

Han KS, Kim L, & Shim I. (2012). Stress and sleep disorder. Experimental neurobiology, 23319874.
Antila H, Kwak I, Choi A, Pisciotti A, Covarrubias I, Baik J, et al. (2022). A noradrenergic-hypothalamic neural substrate for stress .... Proceedings of the National Academy of Sciences of the United States of America, 36331996.
Broderick ML, Khan Q, & Moradikor N. (2025). Understanding the connection between stress and sleep. Progress in brain research, 40222777.

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