Details

Autor(en) / Beteiligte

• Brouwer-Brolsma, E. M.
• Dhonukshe-Rutten, R. A. M.
• van Wijngaarden, J. P.
• van der Zwaluw, N. L.
• Sohl, E.
• In’t Veld, P. H.
• van Dijk, S. C.
• Swart, K. M. A.
• Enneman, A. W.
• Ham, A. C.
• van Schoor, N. M.
• van der Velde, N.
• Uitterlinden, A. G.
• Lips, P.
• Feskens, E. J. M.
• de Groot, L. C. P. G. M.

Titel

Low vitamin D status is associated with more depressive symptoms in Dutch older adults

Ist Teil von

• European journal of nutrition, 2016-06, Vol.55 (4), p.1525-1534

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2016

Quelle

MEDLINE

Beschreibungen/Notizen

• Purpose The existence of vitamin D receptors in the brain points to a possible role of vitamin D in brain function. We examined the association of vitamin D status and vitamin D-related genetic make-up with depressive symptoms amongst 2839 Dutch older adults aged ≥65 years. Methods 25-Hydroxyvitamin D (25(OH)D) was measured, and five ‘vitamin D-related genes’ were selected. Depressive symptoms were measured with the 15-point Geriatric Depression Scale. Results were expressed as the relative risk of the score of depressive symptoms by quartiles of 25(OH)D concentration or number of affected alleles, using the lowest quartile or minor allele group as reference. Results A clear cross-sectional and prospective association between serum 25(OH)D and depressive symptom score was observed. Fully adjusted models indicated a 22 % (RR 0.78, 95 % CI 0.68–0.89), 21 % (RR 0.79, 95 % CI 0.68–0.90), and 18 % (RR 0.82, 95 % CI 0.71–0.95) lower score of depressive symptoms in people in the second, third, and fourth 25(OH)D quartiles, when compared to people in the first quartile ( P for trend <0.0001). After 2 years of daily 15 µg vitamin D supplementation, similar associations were observed. 25(OH)D concentrations did not significantly interact with the selected genes. Conclusion Low serum 25(OH)D was associated with higher depressive symptom scores. No interactions between 25(OH)D concentrations and vitamin D genetic make-up were observed. In view of the probability of reverse causation, we propose that the association should be further examined in prospective studies as well as in randomized controlled trials.