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Severe obesity increases the prevalence but not the incidence of depressive symptoms in the elderly-population-based cohort in Southern Brazil.

Goes, Vanessa Fernanda; Wazlawik, Elisabeth; D'Orsi, Eleonora; González-Chica, David Alejandro.
Int Psychogeriatr; 29(8): 1307-1316, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28162115
BACKGROUND: The relation between body weight status and depressive symptoms in the elderly differs according to age and country of origin. The goal of this study was to analyze the cross-sectional and longitudinal relationship between body mass index (BMI), waist circumference (WC) and depressive symptoms in the elderly. METHODS: A population-based cohort study of 1,702 elderly individuals (70.6+8.0 years) in Southern Brazil evaluated in 2009/10 and 2013/14 was accessed. The body weight status was assessed using measured data of BMI and WC. The Geriatric Depression Scale (GDS-15) was used to determine depressive symptoms. Logistic regression analysis adjusted for sociodemographic and behavioral variables was performed. RESULTS: The prevalence of depressive symptoms in 2009/10 was 23.3% (95% CI 20.3-26.6) and the cumulative incidence in the 4-years period was 10.9% (95% CI 8.7-13.6). Elderly people with obesity class II-III and WC in the highest quartile had higher prevalence odds ratio of being depressed than individuals with normal weight or WC in the lower quartile (OR 2.34; 95% CI 1.42-3.87 and OR 1.73; 95% CI 1.13-2.65, respectively). Meanwhile, intermediary values of BMI and WC were associated with a lower prevalence. When evaluating the incidence of depressive symptoms, overweight individuals and those in the second quartile of WC had a lower risk (58% and 57%, respectively), but severely obese individuals had the same risk compared to those with normal BMI/WC. CONCLUSIONS: Severely obese individuals presented a similar incidence of depressive symptoms compared to those with normal BMI/WC, but higher prevalence. Intermediary values of body weight status decrease the risk of depressive symptoms.