Affective Disorders and Diabetes Mellitus. In: Holmes CS, editor. Neuropsychological and Behavioral Aspects of Diabetes. New York: Springer; 1990. pp. 239-72. [DOI: 10.1007/978-1-4612-3290-2_13]

Diabetes, the brain, and behavior: is there a biological mechanism underlying the association between diabetes and depression?

In summary, our review of the literature suggests that diabetes, especially type 1 diabetes, may place patients at risk for a depressive disorder through a biological mechanism linking the metabolic changes of diabetes to changes in brain structure and function. Further studies are warranted examining these relationships in order to better understand the impact of diabetes on brain functioning and structure as well as one potential manifestation of such changes--affective disorder. Moreover, such studies could play a useful role in better understanding mechanisms that commonly underlie the development of depression in individuals without diabetes but with other medical problems or conditions.

Geriatric depression, antidepressant treatment, and healthcare utilization in a health maintenance organization

OBJECTIVES

To assess the separate effects of depressive symptoms and antidepressant treatment on healthcare utilization and cost.

SETTING

Social Health Maintenance Organization (HMO) at HealthPartners in Minnesota.

PARTICIPANTS

Geriatric Social HMO enrollees were screened for depressive symptoms using the 30-item Geriatric Depression Scale. A stratified sample was created, composed of geriatric enrollees with depressive symptoms, with antidepressant prescriptions, or with neither (n = 516).

DESIGN

Regression analyses were conducted with separate equations for utilization and charge outcome variables, both outpatient and inpatient (log-transformed). The Charlson Comorbidity Index, age, and gender served as covariates.

MEASUREMENT

Depressive symptoms were identified through the Diagnostic Interview Schedule. Antidepressant treatment was determined from the HMO pharmacy database.

RESULTS

Having depressive symptoms was associated with a 19 increase in the number of outpatient encounters and a 30 increase in total outpatient charges. Antidepressant treatment was associated with a 32 increase in total outpatient charges but was not significantly associated with number of outpatient encounters. Depressive symptoms and antidepressant therapy were not significantly associated with inpatient utilization or charges.

CONCLUSION

This study found that patients with depressive symptoms generated more outpatient health care and higher charges but not necessarily more inpatient care. Our findings suggest that programs targeted to geriatric patients whose depression is comorbid with other chronic medical conditions might be cost-effective and particularly appropriate for geriatric care.

Stress hormone-related psychopathology: pathophysiological and treatment implications

Stress is commonly associated with a variety of psychiatric conditions, including major depression, and with chronic medical conditions, including diabetes and insulin resistance. Whether stress causes these conditions is uncertain, but plausible mechanisms exist by which such effects might occur. To the extent stress-induced hormonal alterations (e.g., chronically elevated cortisol levels and lowered dehydroepiandrosterone [DHEA] levels) contribute to psychiatric and medical disease states, manipulations that normalize these hormonal aberrations should prove therapeutic. In this review, we discuss mechanisms by which hormonal imbalance (discussed in the frameworks of "allostatic load" and "anabolic balance") might contribute to illness. We then review certain clinical manifestations of such hormonal imbalances and discuss pharmacological and behavioural treatment strategies aimed at normalizing hormonal output and lessening psychiatric and physical pathology.

Diabetes mellitus and psychological well-being. Results of the Nord-Trøndelag health survey

The present study relies on questionnaire data from a diabetes and hypertension screening carried out on the entire adult population of a medium-sized Norwegian county (total number of participants = 74,977). Self-reported diabetic patients were compared with non-diabetics, and with patients with self-reported angina pectoris, previous cardiac infarction, and stroke. The psychological well-being of the known diabetic patients was found to be significantly poorer than that of those without diabetes, but better than that of those with angina and stroke. HbAl level was found to be significantly related to well-being, the low levels of HbAl (below 7.5%) scoring low on well-being and the high levels (above 15%) scoring high. Because of its special design, the present study allowed comparisons between diabetic patients undergoing treatment and newly detected patients who had not yet been treated. Treatment-related interpretations therefore could be rejected.