Study finds longer sleep duration linked to kidney problems in diabetes

A recent study published in the Journal of the Endocrine Society assessed the relationship between sleep duration and the incidence and progression of diabetic nephropathy among 678 Japanese outpatients with type 2 diabetes. The participants, aged 25 to 69, were monitored over an average follow-up period of 6.0 ± 2.7 years, during which 215 individuals reached the study's composite endpoint related to kidney health.

Sleep Duration and Kidney Health

The findings revealed that mean sleep duration was the only lifestyle factor significantly associated with the endpoint. Participants who reported sleeping less than 6 hours had a baseline for comparison. Those sleeping between 6 to <7 hours had a multivariable-adjusted hazard ratio of 1.08, while those sleeping 7 to <8 hours had a ratio of 1.56, and those sleeping 8 hours or more had a ratio of 1.92 (P for trend = .003). This association persisted even after adjusting for various lifestyle and diabetes-related factors, indicating a stronger correlation in older participants and those with existing kidney issues.

Implications for Diabetes Management

The study suggests that longer sleep duration may serve as a warning sign for potential kidney problems in individuals with diabetes. While the research highlights the importance of sleep patterns, it does not imply that individuals should reduce their sleep duration. Instead, it raises awareness for healthcare providers to monitor kidney health more closely in patients reporting significant changes in sleep habits. Further research is needed to determine if these findings are applicable to other populations beyond the studied group of Japanese outpatients.