Summary: Blood sugar patterns and diet are closely linked to sleep quality in adults. People with diabetes report more sleep disturbances, diagnosed sleep disorders, and irregular sleep duration than those without diabetes; individuals with prediabetes show similar but milder trends. The study also found that strict diabetes control and intense dietary restriction can be associated with more sleep problems. Overall, low-protein, high-fat diets were consistently tied to poorer sleep, while low-carbohydrate, high-fat patterns were linked to a lower likelihood of short sleep in some groups. These results point to opportunities for integrating nutritional strategies into sleep-health recommendations.
The Centers for Disease Control and Prevention recommends adults aim for at least seven hours of sleep per night, yet an estimated 50 to 70 million Americans live with sleep disorders such as sleep apnea or chronic insomnia. Emerging research suggests that both glycemic status and macronutrient intake influence sleep outcomes, making diet and blood-glucose control important factors to consider when addressing sleep health.
Key Facts
- Diabetes & Sleep: Adults with diabetes had higher rates of trouble sleeping, diagnosed sleep disorders, and abnormal sleep duration compared with people who are normoglycemic.
- Diet-Sleep Link: Diets low in protein and relatively high in fat were most consistently associated with poorer sleep quality across glycemic groups.
- Blood Sugar Influence: Both glycemic status and the balance of macronutrients—carbohydrates, proteins, and fats—appeared to shape sleep outcomes, suggesting nutritional adjustments may be an underused route to improving sleep.
Source: George Mason University
Key findings in plain terms
- People with diabetes were more likely to report sleep problems and to have diagnosed sleep disorders than people with normal blood sugar. They also had greater odds of both short and extended sleep duration.
- Those with prediabetes showed similar but less pronounced associations between blood glucose and sleep.
- Tighter diabetes control (measured by lower HbA1c) and stricter dietary management were unexpectedly linked with more sleep complaints in some analyses, indicating the relationship between glucose management and sleep is complex.
- Macronutrient patterns mattered: low-protein, high-fat diets correlated most strongly with poorer sleep, while low-carbohydrate, high-fat diets were associated with a reduced likelihood of short sleep in both people with diabetes and those with normal glucose control.
Questions answered by the research
A: Variability and abnormalities in blood glucose were linked to more sleep disturbances and irregular sleep duration. This association was strongest among people with diabetes, who reported greater trouble sleeping and more diagnosed sleep disorders.
A: Diets low in protein and high in fat were most consistently associated with worse sleep outcomes across participants, regardless of glycemic status. These patterns correlated with reduced sleep quality and more sleep complaints.
A: The study found that low-carbohydrate, high-fat intake was linked to a lower likelihood of short sleep in both people with diabetes and those with normal glucose levels, suggesting that macronutrient balance can influence sleep duration.
Editorial notes
- This article was edited by a Neuroscience News editor.
- The journal paper cited was reviewed in full.
- Additional context was added by editorial staff to clarify findings and implications.
About this research
Author: Mary Cunningham
Source: George Mason University
Contact: Mary Cunningham – George Mason University
Image credit: Neuroscience News
Original Research (open access): “Glycemic status and macronutrient intake as predictors of sleep outcomes: an analysis of NHANES 2007–2020 data” by Raedeh Basiri et al., published in Frontiers in Nutrition. The study analyzed nationally representative NHANES data to explore how glycemic status, diabetes control, and macronutrient energy distribution relate to sleep outcomes.
Abstract (condensed)
Background: Growing evidence links metabolic health and dietary patterns with sleep duration and sleep quality.
Objective: To investigate associations between glycemic status, diabetes control, macronutrient distribution, and sleep outcomes using NHANES 2007–2020 data.
Methods: Researchers used cross-sectional NHANES data to evaluate sleep duration categories (short, normal, extended), trouble sleeping, diagnosed sleep disorders, and dietary macronutrient intake. Glycemic status was determined by self-reported diabetes history and measured HbA1c. Multivariable-adjusted multinomial logistic regression models estimated odds ratios and 95% confidence intervals for sleep outcomes related to glycemic and dietary variables.
Results: Adults with diabetes had higher odds of diagnosed sleep disorders (OR 1.61) and trouble sleeping (OR 1.37) compared with normoglycemic participants. They also faced elevated odds of both short and extended sleep durations. Among people with diabetes, maintaining HbA1c below 6.5% was associated with increased odds of trouble sleeping compared with moderately elevated HbA1c levels. Low protein intake in people with diabetes was linked to higher odds of a sleep disorder diagnosis (OR 2.43), while a low-carbohydrate, high-fat pattern was associated with lower odds of short sleep (OR 0.78). Similar macronutrient patterns predicted altered sleep duration in those with prediabetes and normoglycemia.
Conclusion: The findings underscore the importance of considering both glycemic status and dietary macronutrient balance when addressing sleep health. Integrating nutritional strategies with clinical recommendations for metabolic health may offer new options for improving sleep outcomes in diverse populations.