Type 2 diabetes is more common in those with insomnia

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Sleep Health | Sleep Review

A new study published in Diabetologia finds that the prevalence of type 2 diabetes (T2D) is increased in people with sleep disorders and psychiatric disorders compared to the general population. The research was carried out by Nanna Lindekilde, Department of Psychology, University of Southern Denmark, Odense, Denmark, and colleagues.

Sleep disorders and psychiatric disorders are widespread, affect the quality of life and are associated with an increased mortality rate. This excess mortality is caused in part by higher rates of suicides and accidents, but also by an increased risk of developing physical illnesses known to be linked to mental health problems such as cardiovascular and respiratory diseases. Diabetes is an increasingly common disease around the world, and it is estimated that it currently affects 6 to 9% of the global population. Rates have been rising since 1990, a trend that is expected to continue for the next 20 years.

The authors conducted an in-depth search of four electronic databases of scientific articles and found 32 systematic reviews based on 245 unique primary studies. There were 11 categories of disorders: schizophrenia, bipolar disorder, depression, substance use disorder, anxiety disorder, eating disorder, intellectual disability, psychosis, sleep disorder, dementia, and a “mixed” group that included different types of psychiatric disorders.

The study found that people with a sleep disorder had the highest rates of T2D, with 40% of subjects having the disease, while the prevalence among those with other psychiatric disorders was 21% (binge eating disorder), 16% (disorder disorder) , 14% (anxiety disorders), 11% (bipolar disorder) and 11% (psychosis). The prevalence of T2D was lowest among people with intellectual disabilities, with 8% of people having the disease. In any event, these rates are as high or higher than the 6-9% T2D values ​​found in the general population.

The researchers explain that sleep disorders are a subset of psychiatric illnesses and are highly comorbid with several other illnesses. In the overview, most of the primary studies were carried out in people with additional conditions such as chronic kidney disease. “It is likely that this physical comorbidity contributes to the high estimates of T2D prevalence in people with a sleep disorder. The association between T2D and sleep disorders is likely to be bidirectional, with the sleep disorder increasing the risk of developing diabetes, while diabetes, especially when combined with poor metabolic control, increases the risk of developing sleep problems, “the authors say in a press release.



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