Cardiovascular Effects of Sleep Deprivation

Sleep deprivation exerts widespread deleterious effects on the cardiovascular system, encompassing both acute disturbances and long-term disease risk. Insufficient or fragmented sleep disrupts autonomic balance, augmenting sympathetic activity and reducing parasympathetic tone. This imbalance raises resting heart rate, attenuates heart rate variability and predisposes to hypertension. Endothelial dysfunction emerges rapidly after even a single night of curtailed sleep, with diminished nitric oxide bioavailability, increased vascular tone and early signs of arterial stiffness. Over time, persistent sleep loss fosters systemic inflammation, oxidative stress and metabolic dysregulation, all of which contribute to atherogenesis and vascular remodelling. In animal models, chronic sleep restriction drives cardiac remodelling, fibrosis and impaired contractile reserve, while promoting arrhythmogenic substrates in both the atria and ventricles. Clinically, epidemiological evidence links habitual short sleep duration and poor sleep quality to heightened incidence of coronary artery disease, heart failure and atrial fibrillation. The global significance of these effects is underscored by the ubiquity of modern sleep curtailment and its potential to amplify the burden of cardiovascular disease. Current research seeks to elucidate molecular pathways underpinning these changes, to identify biomarkers of early dysfunction and to develop targeted interventions—ranging from behavioural sleep optimisation to pharmacological modulation of sleep-sensitive signalling pathways.

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Cardiovascular Effects of Sleep Deprivation publication trend

The graph below shows the total number of articles in cardiovascular effects of sleep deprivation across all publications each year (not limited to Nature Index journals).

Technical terms

Endothelial dysfunction: Impairment of the inner lining of blood vessels affecting vasodilatation, barrier function and vascular repair.

Atrial fibrillation (AF): A rapid and irregular atrial rhythm that elevates the risk of thromboembolism, stroke and heart failure.

Heart rate variability (HRV): A quantification of beat-to-beat fluctuations in heart rate, serving as a non-invasive marker of autonomic nervous system balance.

Cardiac remodelling: Structural and functional alterations in myocardial tissue, including hypertrophy and fibrotic changes, in response to chronic stress or injury.

Fibrosis: Excessive deposition of extracellular matrix proteins in cardiac tissue, leading to stiffening of the myocardium and impaired contractility.

References

1. Ckip-1 3’UTR alleviates prolonged sleep deprivation induced cardiac dysfunction by activating CaMKK2/AMPK/cTNI pathway. Molecular Biomedicine (2024).
2. The Role of Sleep in Cardiovascular Disease. Current Atherosclerosis Reports (2024).
3. Chronic Partial Sleep Deprivation Increased the Incidence of Atrial Fibrillation by Promoting Pulmonary Vein and Atrial Arrhythmogenesis in a Rodent Model. International Journal of Molecular Sciences (2024).