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LeBlanc ES, Smith NX, Nichols GA, et al. Insomnia is associated with an increased risk of type 2 diabetes in the clinical setting. BMJ Open Diabetes Res Care. 2018;6(1):e000604doi: 10.1136/bmjdrc-2018-000604.
LeBlanc, E. S., Smith, N. X., Nichols, G. A., Allison, M. J., & Clarke, G. N. (2018). Insomnia is associated with an increased risk of type 2 diabetes in the clinical setting. BMJ open diabetes research & care, 6(1), e000604. https://doi.org/10.1136/bmjdrc-2018-000604
LeBlanc, Erin S, et al. "Insomnia is associated with an increased risk of type 2 diabetes in the clinical setting." BMJ open diabetes research & care vol. 6,1 (2018): e000604. doi: https://doi.org/10.1136/bmjdrc-2018-000604
LeBlanc ES, Smith NX, Nichols GA, Allison MJ, Clarke GN. Insomnia is associated with an increased risk of type 2 diabetes in the clinical setting. BMJ Open Diabetes Res Care. 2018 Dec 26;6(1):e000604. doi: 10.1136/bmjdrc-2018-000604. eCollection 2018. PMID: 30687505; PMCID: PMC6326337.
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BMJ Open Diabetes Res Care. 2018 Dec 26;6(1):e000604. doi: 10.1136/bmjdrc-2018-000604. eCollection 2018.

Insomnia is associated with an increased risk of type 2 diabetes in the clinical setting.

BMJ open diabetes research & care

Erin S LeBlanc, Ning X Smith, Gregory A Nichols, Michael J Allison, Gregory N Clarke

Affiliations

  1. Science Program Department, Kaiser Permanente Center for Health Research NW, Portland, Oregon, USA.

PMID: 30687505 PMCID: PMC6326337 DOI: 10.1136/bmjdrc-2018-000604

Abstract

OBJECTIVE: To determine the possible association between insomnia and risk of type 2 diabetes mellitus (T2DM) in the naturalistic clinical setting.

RESEARCH DESIGN AND METHODS: We conducted a retrospective cohort study to examine the risk of developing T2DM among patients with pre-diabetes with and without insomnia. Participants with pre-diabetes (identified by a physician or via two laboratory tests) between January 1, 2007 and December 31, 2015 and without sleep apnea were followed until December 31, 2016. Patients were determined to have T2DM when two of the following occurred within a 2-year window: physician-entered outpatient T2DM diagnosis (International Classification of Diseases [ICD]-9 250.00; ICD-10 E11), dispensing of an antihyperglycemia agent, and hemoglobin A1c (A1c) >6.5% (48 mmol/mol) or fasting plasma glucose (FPG) >125 mg/dL. One hospital inpatient stay with an associated T2DM diagnosis was also sufficient for classification of T2DM.

RESULTS: Our cohort consisted of 81 233 persons with pre-diabetes, 24 146 (29.7%) of whom had insomnia at some point during the 4.3-year average observation period. After adjustment for traditional risk factors, those with insomnia were 28% more likely to develop T2DM than those without insomnia (HR 1.28; 95% CI 1.24 to 1.33). The estimate was essentially unchanged after adjusting for baseline A1c level (HR 1.32; 95% CI 1.25 to 1.40) or FPG (HR 1.28; 95% CI 1.23 to 1.33).

CONCLUSIONS: Insomnia imparts an increased risk of T2DM comparable with that conferred by traditional risk factors (eg, overweight, non-white race, cardiovascular risk factors). This association could have clinical importance because it suggests a new potentially modifiable risk factor that could be targeted to prevent diabetes.

Keywords: prevention; sleep disorder(s); type 2 diabetes

Conflict of interest statement

Competing interests: ESL has had unrelated funding from Merck in the last years. GAN has unrelated grant funding from Boehringer-Ingelheim, Merck & Co, Sanofi, Janssen Pharmaceuticals and Amarin.

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