Association between serum vitamin D and depressive symptoms among female workers in the manufacturing industry.
	    		
		   		
		   			
		   		
	    	
    	 
    	10.1186/s40557-015-0083-y
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Soon Il KWON
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Jun Seok SON
			        		
			        		;
		        		
		        		
		        		
			        		Young Ouk KIM
			        		
			        		;
		        		
		        		
		        		
			        		Chang Ho CHAE
			        		
			        		;
		        		
		        		
		        		
			        		Ja Hyun KIM
			        		
			        		;
		        		
		        		
		        		
			        		Chan Woo KIM
			        		
			        		;
		        		
		        		
		        		
			        		Hyoung Ouk PARK
			        		
			        		;
		        		
		        		
		        		
			        		Jun Ho LEE
			        		
			        		;
		        		
		        		
		        		
			        		Jun Ick JUNG
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea. realcatson@naver.com
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Original Article
 
        	
        	
            
            	- MeSH:
            	
	        			
	        				
	        				
				        		
					        		Calcium;
				        		
			        		
				        		
					        		Depression*;
				        		
			        		
				        		
					        		Female*;
				        		
			        		
				        		
					        		Hematologic Tests;
				        		
			        		
				        		
					        		Humans;
				        		
			        		
				        		
					        		Nervous System;
				        		
			        		
				        		
					        		Odds Ratio;
				        		
			        		
				        		
					        		Phosphorus;
				        		
			        		
				        		
					        		Physical Examination;
				        		
			        		
				        		
					        		Vitamin D Deficiency;
				        		
			        		
				        		
					        		Vitamin D*;
				        		
			        		
				        		
					        		Vitamins*
				        		
			        		
	        			
	        			
            	
            	
 
            
            
            	- From:Annals of Occupational and Environmental Medicine
	            		
	            		 2015;27(1):28-
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:English
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	BACKGROUND: Vitamin D has been known to maintain the body's balance of calcium and phosphorus as well as skeletal health. There has been increasing emphasis on the importance of vitamin D as recent studies have been reporting the specific functions of vitamin D in the cerebral nervous system and the association between the level of serum vitamin D and depressive symptoms. However, there is currently a paucity of research investigating the association between serum vitamin D and depressive symptoms in Korean subjects. Consequently, this study has aimed to determine the level of serum vitamin D and explore the association between serum vitamin D and depressive symptoms in Korean female workers. METHOD: A medical examination, questionnaire, anthropometric measurements, and a blood test were conducted between February 3 and March 7, 2014 in 1054 subjects among female workers in the manufacturing industry who underwent physical examinations in a university hospital. From this data, we identified the level of serum vitamin D and investigated the association between serum vitamin D deficiency and depressive symptoms. RESULTS: The average serum vitamin D level of the 1054 subjects was 9.07 +/- 3.25 ng/mL, and the number of subjects in the serum vitamin D deficiency group with less than 10 ng/mL was 721 (68.4 %). The odds ratio of the depressive symptom group with a CES-D score of 16 or above being in the deficiency group with a serum vitamin D level less than 10 ng/mL was found to be 1.55 (95 % CI = 1.15-2.07). CONCLUSION: 68.4 % of female workers in the manufacturing industry were in the deficiency group with serum vitamin D levels less than 10 ng/mL. Additionally, we identified an association between serum vitamin D deficiency and depressive symptoms. In the future, if serum vitamin D deficiency is checked regularly in workers, we expect to achieve better outcomes in managing their depressive symptoms.