Elevated Risk of Developing Type 2 Diabetes in People with Psychiatric Disorders

Journal of Diabetes and its Complications: August 2023

Nearly one out of three individuals will develop a psychiatric disorder during their life. Severe psychiatric disorders are associated with higher mortality rates, with 10–20 life-years lost compared to individuals without a severe psychiatric disorder

Several psychiatric disorders are linked with an increased risk of developing type 2 diabetes (T2D), but the mediating mechanisms are unclear. Authors aimed to investigate health behaviors, obesity, psychotropic medication use, and comorbidity as potential mediating mechanisms explaining these associations.

TAKE-HOME MESSAGE

This population-based survey investigated health behaviors (daily smoking, high alcohol consumption, physical inactivity, unhealthy diet, and sleep problems), obesity, psychotropic medication (antipsychotic medication and antidepressant medication) use, and comorbidity as mediating mechanisms explaining the associations between psychiatric disorders and an increased risk of type 2 diabetes.

The risk of developing type 2 diabetes was higher in individuals with substance use disorders, schizophrenia, mood disorders, eating disorders, or personality disorders. The largest proportional mediating effect on the association was the use of antidepressant medications.

The use of antidepressant medications was the largest contributor to the association between psychiatric disorders and incident type 2 diabetes.

Conclusions

For all the psychiatric disorders significantly associated with incident T2D, authors found that use of psychotropic medication (antipsychotic and antidepressant medication) contributed more to the associations with incident T2D than health behaviors.

More specifically, the use of antidepressant medication had the largest contribution to the associations between psychiatric disorders and incident T2D.

Daily smoking, physical inactivity, sleep problems, obesity, use of antipsychotic medication, and psychiatric comorbidity also played a significant role, whereas high alcohol consumption had a small protective effect on the associations, and unhealthy diet and somatic comorbidity did not mediate the associations.


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AIMS

Several psychiatric disorders are linked with an increased risk of developing type 2 diabetes (T2D), but the mediating mechanisms are unclear. We aimed to investigate health behaviors, obesity, psychotropic medication use, and comorbidity as potential mediating mechanisms explaining these associations.

METHODS

We combined data from a large population-based survey with register-based data and followed a sample of 250,013 Danes (≥16 years) for up to 8.9 years. We conducted mediation analyses investigating 10 potential mediators of the associations between psychiatric disorders and incident T2D.

RESULTS

Individuals with a substance use disorder, schizophrenia, mood disorder, neurotic disorder, eating disorder, or a personality disorder had a significantly higher risk of developing T2D. Organic disorders, intellectual disabilities, developmental and behavioral disorders were not associated with T2D-risk. For all psychiatric disorders significantly associated with T2D, the use of antidepressant medication had the largest proportional mediating effect on the association (13–32 %).

CONCLUSIONS

Use of antidepressant medication had the largest contribution to the associations between psychiatric disorders and incident T2D. Future epidemiological studies and prevention studies should focus on optimizing the use of antidepressant medication with minimal side effects, and the promotion of health behaviors in individuals with a psychiatric disorder to prevent T2D.

 

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https://www.sciencedirect.com/science/article/pii/S1056872723001897

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