Does sleeping increase blood sugar?

Blood sugar levels also increase during sleep. Blood sugar fluctuations that occur overnight and during sleep are normal and not a cause for concern for most healthy people. Sleep also plays an important role in maintaining healthy blood sugar levels.

sleepfoundation.org - Sleep & Glucose: How Blood Sugar Can Affect Rest - Sleep Foundation

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Danielle writes in-depth articles about sleep solutions and holds a psychology degree from the University of British Columbia. Every night—regardless of whether you sleep—your blood sugar levels increase as a part of the natural human circadian rhythm cycle. Blood sugar levels also increase during sleep. Blood sugar fluctuations that occur overnight and during sleep are normal and not a cause for concern for most healthy people. Sleep also plays an important role in maintaining healthy blood sugar levels. Over the past few decades, the overall average number of hours slept each night has apparently decreased. This decrease in sleep may have contributed to the increase in obesity and diabetes that occurred over the same stretch of time. Obesity and diabetes are affected by blood sugar levels, while one’s blood sugar also impacts obesity and diabetes. As a result, blood sugar could be one of the factors involved in weight loss and sleep.

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Sleep and physical health are closely connected, so it’s not surprising that sleep affects blood sugar levels. However, the relationship between sleep and blood sugar is complex. There isn’t a simple formula that demonstrates a relationship between the amount of sleep and a corresponding increase or decrease in blood sugar.

Can Sleep Raise or Lower Glucose Levels?

Although it sounds contradictory, sleep can both raise and lower glucose levels. Our bodies experience a cycle of changes every day—called a circadian rhythm—which naturally raises blood sugar levels at night and when a person sleeps. These natural blood sugar elevations are not a cause for concern. Restorative sleep might also lower unhealthy blood sugar levels by promoting healthy systems. Decreased sleep is a risk factor Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. See Full Reference for increased blood sugar levels. Even partial sleep deprivation over one night increases insulin resistance, which can in turn increase blood sugar levels. As a result, a lack of sleep has been associated with diabetes, a blood sugar disorder. More research is needed to better understand the connection between sleep and blood sugar. So far, the following factors have been found to influence the relationship between sleep and blood sugar levels:

Why Does Sleep Affect Blood Sugar?

Researchers are beginning to uncover why sleep affects blood sugar and which underlying mechanisms are at play. So far, they’ve learned that the following physiological factors play a role in the relationship between sleep and blood sugar:

Insulin sensitivity is reduced by sleep deprivation and impacts glucose

The time of day a person sleeps impacts insulin and cortisol levels, both of which affect glucose

Increases in growth hormone accompany glucose increases during sleep

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Oxidative stress and inflammation are increased by sleep deprivation and impact glucose

Inflammatory markers IL-6 Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. See Full Reference TNF-alpha are increased by sleep deprivation Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. See Full Reference

How Does Blood Glucose Affect Sleep?

Just as sleep affects blood sugar levels, blood sugar levels may also impact sleep quality. A study of people with type 2 diabetes found that those with higher blood sugar levels experience poorer sleep Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. See Full Reference . Another study found that 62% of people with glucose levels in the pre-diabetes range are likely to have poor sleep Trusted Source National Library of Medicine, Biotech Information The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information. See Full Reference , compared to 46% of people with normal glucose levels. Researchers aren’t certain why increased blood sugar may be associated with poor sleep and more study is necessary to understand the relationship.

Can Low Blood Sugar Cause Sleep Problems?

Low blood sugar, called hypoglycemia, can cause sleep problems. Hypoglycemia can occur in people with or without diabetes. Nocturnal hypoglycemia is a form of hypoglycemia that occurs at night.

Nightmares

Crying or yelling during sleep

Sweating profusely

Feeling irritable or confused upon waking

Do Sleep Problems Affect Blood Sugar?

Since a lack of sleep and blood sugar levels are related, it makes sense that not sleeping well can raise blood sugar levels. Researchers have suggested the following connections between sugar and lack of sleep or sleep problems:

sleepfoundation.org - Sleep & Glucose: How Blood Sugar Can Affect Rest - Sleep Foundation

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