Study Links Abnormal Sleep Duration to Increased Risk of Chronic Liver Disease

This study examined how habitual sleep patterns relate to markers of liver injury and fibrosis in adults. Past research has established links between sleep duration and cardiometabolic health, obesity, and insulin resistance, which are known contributors to chronic liver disease. However, the direct link between sleep and liver health had not been thoroughly investigated until now.

Researchers analyzed data from a large adult cohort that included self-reported sleep duration, metabolic risk factors, and non-invasive liver disease indicators. They focused on both short and long sleep durations, as previous studies indicated both extremes were linked to adverse metabolic outcomes.

Findings showed that participants who reported consistently short sleep durations had elevated liver enzymes and higher fibrosis risk scores compared to those with moderate sleep durations. While long sleep duration was also associated with adverse liver markers, this relationship was weaker than that observed for short sleep durations.

The study further revealed that the connection between sleep duration and liver disease risk was particularly strong in individuals with obesity, Type 2 diabetes, or metabolic syndrome. This suggests that sleep disruption may intensify existing metabolic stress on the liver, contributing to disease progression.

The authors posited that poor sleep may affect liver health through various mechanisms, such as altered glucose metabolism, increased inflammation, and disruption of circadian rhythms that govern liver function.

These findings underline the rising interest in lifestyle factors beyond diet and physical activity in the prevention of chronic liver disease. Clinicians could consider sleep habits in their holistic risk assessments, especially for patients with metabolic dysfunction-associated liver conditions.

Although the study did not establish a direct cause-and-effect relationship, it emphasized sleep as a potentially modifiable factor that could complement established lifestyle interventions.

The authors advocated for future prospective studies to determine if improving sleep duration and quality could lower the risk of liver disease or slow its progression among high-risk populations. They suggested interventional studies to explore whether sleep-centered strategies should be integrated into liver disease prevention and management protocols.

Reference: Centers for Disease Control and Prevention. Sleep duration and risk of chronic liver disease. 2026.