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BioMed Research International
Volume 2013 (2013), Article ID 582693, 10 pages
http://dx.doi.org/10.1155/2013/582693
Research Article

The Association between Dietary Intake of Folate and Physical Activity with Psychological Dimensions of Depressive Symptoms among Students from Iran

Department of Epidemiology, Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran

Received 8 April 2013; Revised 18 September 2013; Accepted 19 September 2013

Academic Editor: Ali Khraibi

Copyright © 2013 Teymoor Yary. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Depression in students is a major public health problem. Although several risk factors associated with depression have been identified, the cause of depression is still not clear. Several studies have demonstrated that physical activity and nutrient intake, such as increased levels of B vitamins in serum, decrease symptoms of depression. The aim of this study was to investigate the association between physical activity and dietary intake of vitamins B6, B9, and B12 and symptoms of depression among postgraduate students. The results of this study suggest that intake of vitamin B9 may modulate the total score of Center for Epidemiological Studies Depression Scale (CES-D) and two subscales of the CES-D including depressive affect and interpersonal difficulties. This study also showed that moderate/high levels of physical activity were inversely and significantly associated with symptoms of depression (total scores) and three subscales of the CES-D including depressive affect, positive affect, and somatic complaints.