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Vitamin D deficiency and course of frailty in a depressed older population

van den Berg, K. S., Arts, M. H. L., Collard, R. M., van den Brink, R. H. S., Comijs, H. C., Marijnissen, R. M. & Oude Voshaar, R. C., 15-Nov-2018, In : Aging and Mental Health. p. 1-7 7 p.

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OBJECTIVE: To study the association between vitamin D levels and frailty, its components and course in a depressed sample.

METHODS: Baseline and two-year follow-up data from the depressed sample of the Netherlands Study of Depression in Older persons (NESDO), a prospective observational cohort study, were analyzed. The 378 participants (aged 60-93) had a diagnosis of depression according to DSM-IV criteria. Frailty was defined according to Fried's physical phenotype. 25-OH vitamin D measurement was performed by liquid chromatography - tandem mass spectrometry. Linear and logistic regression analyses were performed, adjusted for covariates.

RESULTS: Higher vitamin D levels were cross-sectionally associated with lower prevalence of frailty (OR 0.64 [95%-CI 0.45 - 0.90], p = .010), predicted a lower incidence of frailty among non-frail depressed patients (OR 0.51 [95%-CI 0.26 - 1.00], p=.050), and, surprisingly, the persistence of frailty among frail depressed patients (OR 2.82 [95%-CI 1.23 - 6.49], p=.015).

CONCLUSIONS: In a depressed population, higher vitamin D levels were associated with lower prevalence and incidence of frailty. Future studies should examine whether the favorable effect of low vitamin D levels on the course of frailty can be explained by confounding or whether unknown pathophysiological mechanisms may exert protective effects.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalAging and Mental Health
Publication statusE-pub ahead of print - 15-Nov-2018

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