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Differential associations between depressive symptoms and glycaemic control in outpatients with diabetes

M Bot1, F Pouwer, P de Jonge

  • 1CoRPS-Center of Research on Psychology in Somatic diseases, Department of Medical and Clinical Psychology, Tilburg University, Tilburg, The Netherlands. m.bot@uvt.nl

Diabetic Medicine : a Journal of the British Diabetic Association
|November 28, 2012
PubMed

Insights

Depression symptoms like poor mood and sleep issues are linked to higher blood sugar (HbA1c) in diabetes patients. These connections persist over time, highlighting the need for integrated mental health care in diabetes management.

Area of Science:

  • Endocrinology
  • Psychiatry
  • Clinical Psychology

Background:

  • Depression is prevalent in individuals with diabetes, often correlating with elevated hemoglobin A1c (HbA1c) levels.
  • Depression is a complex condition with diverse symptoms, and the specific impact of individual symptoms on diabetes control remains underexplored.

Purpose of the Study:

  • To investigate the associations between individual depressive symptoms and HbA1c levels in outpatients with diabetes.
  • To determine if these associations differ between Type 1 and Type 2 diabetes and persist over a 1-year follow-up period.

Main Methods:

  • A cohort of 646 outpatients with diabetes was assessed at three tertiary diabetes clinics.
  • The nine-item Patient Health Questionnaire (PHQ-9) was used to evaluate depressive symptoms at baseline.
  • HbA1c levels were extracted from medical records at baseline and after 1 year.

Main Results:

  • 45% of participants reported at least one depressive symptom.
  • Depressed mood, sleeping difficulties, appetite problems, and suicidal ideation were significantly associated with higher baseline HbA1c.
  • Depressed mood, sleeping difficulties, appetite problems, and psychomotor agitation/retardation were linked to higher HbA1c at 1-year follow-up.
  • Associations were generally stronger in Type 1 diabetes patients compared to Type 2.
  • Suicidal ideation was the only symptom associated with a change in HbA1c over time.

Conclusions:

  • Several individual depressive symptoms are associated with elevated HbA1c levels in people with diabetes.
  • These associations are sustained over a 1-year period.
  • Further research is warranted to elucidate the underlying mechanistic pathways connecting specific depressive symptoms to glycemic control.
Abstract

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