According to several systemic reviews and prospective meta-analyses, insomnia, few hours of
sleep, daytime sleepiness, nap duration, and chronotype are sleep traits that influence
glycemic values ​​in the general population as assessed by glycosylated hemoglobin (HbA1c).

The University of Bristol lead a study in which people who reported often having difficulty
falling asleep or staying asleep had higher blood sugar levels than people who reported never,
rarely, or only sometimes having these difficulties.

Causal relationships are still unclear from these data, due to possible residual confounding
biases (physical activity and diet) and reverse causality (nocturia and neuropathic pain).

The findings could improve researchers’ understanding of how sleep disorders influence type 2
diabetes risk. The study also suggests that lifestyle or pharmacological interventions that
improve insomnia could help prevent or treat diabetes.

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