1.Relationship Between Trauma, Discrimination, and Suicidal Ideation Among North Korean Defectors
Kyungho LIM ; Jiwon BAEK ; Hokon KIM ; Ocksim KIM ; Sang Hui CHU ; Young-Chul JUNG
Psychiatry Investigation 2024;21(11):1203-1210
		                        		
		                        			 Objective:
		                        			This study aimed to explore the relationship between suicidal ideation and specific trauma and social discrimination among North Korean defectors. 
		                        		
		                        			Methods:
		                        			A total of 448 North Korean defectors were recruited from online and offline communities and counseling centers. Participants provided sociodemographic and psychiatric history information via an online survey. Various assessment tools, including the Traumatic Event Checklist for North Korean Defectors, International Trauma Questionnaire, Experiences of Discrimination Scale, UCLA Loneliness Scale (short-form), and World Health Organization Quality of Life Instrument, Short Form (WHOQOL-BREF), were employed. Multiple logistic regression analysis was used to examine the association between suicidal ideation and different types of trauma and discrimination. 
		                        		
		                        			Results:
		                        			Among participants, 38.4% reported experiencing suicidal ideation. The most prevalent trauma was “unwanted separation from spouse, parent, or sibling” (69.4%), and the primary form of discrimination was “unfairness during employment” (35.7%). After adjusting for relevant variables, experiencing “extreme life-threatening hardship,” “unwanted separation from a child,” and “discrimination in income” significantly increased the likelihood of suicidal ideation. Importantly, unlike other refugee groups, interpersonal violence like torture or sexual abuse did not significantly contribute to suicidal ideation in this population. These findings highlight the unique vulnerabilities of North Korean defectors and suggest that income-related discrimination, unwanted separation from children, and life-threatening hardships are critical factors influencing suicidal ideation. Limitations such as recall biases and the cross-sectional nature of the data should be acknowledged. 
		                        		
		                        			Conclusion
		                        			This study underscores the need for tailored psychiatric support for North Korean defectors, recognizing their distinctive needs compared to other refugee populations. 
		                        		
		                        		
		                        		
		                        	
2.Nutrition and food intake status among adults in Jeju according to sociodemographic characteristics and obesity
Hyunji HAM ; Hanbin KO ; Sumin KIM ; Youjeong JANG ; Jong-Seok BYUN ; Yoonsuk JEKAL ; Insuk CHAI ; Kyungho HA
Journal of Nutrition and Health 2024;57(6):667-684
		                        		
		                        			 Purpose:
		                        			This study evaluated the nutrition and food intake status among adults in Jeju, Republic of Korea, based on their sociodemographic characteristics and obesity. 
		                        		
		                        			Methods:
		                        			Nine hundred and forty-nine adults aged 19 years or older were included based on the 2022 Jeju Nutrition and Physical Activity Survey data. A dietary assessment was conducted using a one-day, 24-hour recall method, and the nutrition status was evaluated using the 2020 Dietary Reference Intakes for Koreans. The sociodemographic status included sex, age, education, and household income, and obesity was defined as a body mass index (BMI) of ≥ 25 kg/m 2 . 
		                        		
		                        			Results:
		                        			The mean age of the subjects was 49.8 years, and the overall prevalence of obesity was 48.4% (59.5% for males and 37.2% for females). The top three insufficient nutrients consumed at less than the estimated average requirement were calcium (77.7%), vitamin A (77.3%), and vitamin C (61.3%), while 40.9% of the subjects consumed fat as more than 30% of their total energy intake. The sodium intake was approximately 1.5 times higher than the chronic disease risk reduction intake level. In terms of food groups, the participants consumed more meat (148.2 g/day), seafood (69.0 g/day), potatoes, and starches (41.6 g/day) but consumed fewer vegetables (214.3 g/day) and less dairy (62.0 g/day) than Korean adults. The nutritional status and food intake patterns differed by the sociodemographic status. In addition, the obese group consumed more poultry and beverages than the non-obese group (p < 0.05 for all). 
		                        		
		                        			Conclusion
		                        			Adults in Jeju under-consume essential nutrients while over-consuming certain nutrients, such as fat and sodium. The nutritional status also varied according to the sociodemographic characteristics. These findings suggest that sociodemographic factors should be considered carefully when developing nutritional policies and programs to improve the nutritional status and address obesity among adults in Jeju. 
		                        		
		                        		
		                        		
		                        	
3.Differences of nutritional intake habits and Dietary Inflammatory Index score between occupational classifications in the Korean working population
Seung Hee WOO ; Yangwoo KIM ; Kyungho JU ; Juhyeong KIM ; Jaechul SONG ; Soo-Jin LEE ; Jeehee MIN
Annals of Occupational and Environmental Medicine 2024;36(1):e5-
		                        		
		                        			
		                        			  Human nutrient intake is closely related to the conditions of their workplace. This study used data from the Korean National Health and Nutritional Examination Survey (KNHANES) conducted between 2016 and 2020. The study population comprised individuals aged 19 to 65 years who were engaged in paid work, excluding soldiers (total = 12,201, male = 5,872, female = 6,329). The primary outcome of interest was the Dietary Inflammatory Index (DII) score, which was calculated using dietary intake data. Generalized linear models were used for statistical analyses. Pink-collar workers had higher DII scores, indicating a potentially higher inflammatory diet than white-collar workers (mean: 2.18 vs. 1.89,  DII scores and dietary patterns differed among occupational groups and genders.
		                        		
		                        	
4.The impact of long working hours on daily sodium intake
Kyungho JU ; Yangwoo KIM ; Seung Hee WOO ; Juhyeong KIM ; Inah KIM ; Jaechul SONG ; Soo-Jin LEE ; Jeehee MIN
Annals of Occupational and Environmental Medicine 2024;36(1):e9-
		                        		
		                        			
		                        			  Long working hours are associated with an increased risk of cardiovascular disease, yet the underlying mechanism(s) remain unclear. The study examines how occupational factors like working hours, shift work, and employment status correlate with dietary choices and sodium intake, impacting hypertension risk. This study used data from the Korea National Health and Nutrition Examination Survey conducted between 2013 and 2020. The dataset included 8,471 respondents, all of whom were wage workers aged 20 or older and reported working at least 36 hours per week. Individuals who have been previously diagnosed with or are currently diagnosed with hypertension, diabetes, or dyslipidemia were excluded. The average daily sodium intake was assessed via a 24-hour dietary recall method. Average weekly working hours were categorized into 3 groups: 36–40 hours, 41–52 hours, and over 52 hours. Multiple logistic regression models were used. Study findings revealed that 83.7% of participants exceeded the recommended daily sodium intake of 2 g set by the World Health Organization. After adjusting for confounding factors, a positive correlation was observed between average working hours and daily sodium intake. Among males, statistical significance was found in the group with average weekly working hours of 41–52 hours (prevalence ratio [PR]: 1.17; 95% confidence interval [CI]: 1.05–1.30) and the group exceeding 52 hours (PR: 1.22; 95% CI: 1.09–1.38) when comparing the fourth quartile of daily sodium intake to the combined quartiles of Q1, Q2, and Q3. Among females, no significance was noted. Long working hours were associated with increased sodium intake, primarily among male workers. This connection is likely attributed to having less time for home-cooked meals, resulting in higher fast food consumption and dining out. A workplace intervention promoting healthy eating and reducing stress is essential to lower sodium consumption and mitigate hypertension risk.
		                        		
		                        	
5.Relationship Between Trauma, Discrimination, and Suicidal Ideation Among North Korean Defectors
Kyungho LIM ; Jiwon BAEK ; Hokon KIM ; Ocksim KIM ; Sang Hui CHU ; Young-Chul JUNG
Psychiatry Investigation 2024;21(11):1203-1210
		                        		
		                        			 Objective:
		                        			This study aimed to explore the relationship between suicidal ideation and specific trauma and social discrimination among North Korean defectors. 
		                        		
		                        			Methods:
		                        			A total of 448 North Korean defectors were recruited from online and offline communities and counseling centers. Participants provided sociodemographic and psychiatric history information via an online survey. Various assessment tools, including the Traumatic Event Checklist for North Korean Defectors, International Trauma Questionnaire, Experiences of Discrimination Scale, UCLA Loneliness Scale (short-form), and World Health Organization Quality of Life Instrument, Short Form (WHOQOL-BREF), were employed. Multiple logistic regression analysis was used to examine the association between suicidal ideation and different types of trauma and discrimination. 
		                        		
		                        			Results:
		                        			Among participants, 38.4% reported experiencing suicidal ideation. The most prevalent trauma was “unwanted separation from spouse, parent, or sibling” (69.4%), and the primary form of discrimination was “unfairness during employment” (35.7%). After adjusting for relevant variables, experiencing “extreme life-threatening hardship,” “unwanted separation from a child,” and “discrimination in income” significantly increased the likelihood of suicidal ideation. Importantly, unlike other refugee groups, interpersonal violence like torture or sexual abuse did not significantly contribute to suicidal ideation in this population. These findings highlight the unique vulnerabilities of North Korean defectors and suggest that income-related discrimination, unwanted separation from children, and life-threatening hardships are critical factors influencing suicidal ideation. Limitations such as recall biases and the cross-sectional nature of the data should be acknowledged. 
		                        		
		                        			Conclusion
		                        			This study underscores the need for tailored psychiatric support for North Korean defectors, recognizing their distinctive needs compared to other refugee populations. 
		                        		
		                        		
		                        		
		                        	
6.Relationship Between Trauma, Discrimination, and Suicidal Ideation Among North Korean Defectors
Kyungho LIM ; Jiwon BAEK ; Hokon KIM ; Ocksim KIM ; Sang Hui CHU ; Young-Chul JUNG
Psychiatry Investigation 2024;21(11):1203-1210
		                        		
		                        			 Objective:
		                        			This study aimed to explore the relationship between suicidal ideation and specific trauma and social discrimination among North Korean defectors. 
		                        		
		                        			Methods:
		                        			A total of 448 North Korean defectors were recruited from online and offline communities and counseling centers. Participants provided sociodemographic and psychiatric history information via an online survey. Various assessment tools, including the Traumatic Event Checklist for North Korean Defectors, International Trauma Questionnaire, Experiences of Discrimination Scale, UCLA Loneliness Scale (short-form), and World Health Organization Quality of Life Instrument, Short Form (WHOQOL-BREF), were employed. Multiple logistic regression analysis was used to examine the association between suicidal ideation and different types of trauma and discrimination. 
		                        		
		                        			Results:
		                        			Among participants, 38.4% reported experiencing suicidal ideation. The most prevalent trauma was “unwanted separation from spouse, parent, or sibling” (69.4%), and the primary form of discrimination was “unfairness during employment” (35.7%). After adjusting for relevant variables, experiencing “extreme life-threatening hardship,” “unwanted separation from a child,” and “discrimination in income” significantly increased the likelihood of suicidal ideation. Importantly, unlike other refugee groups, interpersonal violence like torture or sexual abuse did not significantly contribute to suicidal ideation in this population. These findings highlight the unique vulnerabilities of North Korean defectors and suggest that income-related discrimination, unwanted separation from children, and life-threatening hardships are critical factors influencing suicidal ideation. Limitations such as recall biases and the cross-sectional nature of the data should be acknowledged. 
		                        		
		                        			Conclusion
		                        			This study underscores the need for tailored psychiatric support for North Korean defectors, recognizing their distinctive needs compared to other refugee populations. 
		                        		
		                        		
		                        		
		                        	
7.Differences of nutritional intake habits and Dietary Inflammatory Index score between occupational classifications in the Korean working population
Seung Hee WOO ; Yangwoo KIM ; Kyungho JU ; Juhyeong KIM ; Jaechul SONG ; Soo-Jin LEE ; Jeehee MIN
Annals of Occupational and Environmental Medicine 2024;36(1):e5-
		                        		
		                        			
		                        			  Human nutrient intake is closely related to the conditions of their workplace. This study used data from the Korean National Health and Nutritional Examination Survey (KNHANES) conducted between 2016 and 2020. The study population comprised individuals aged 19 to 65 years who were engaged in paid work, excluding soldiers (total = 12,201, male = 5,872, female = 6,329). The primary outcome of interest was the Dietary Inflammatory Index (DII) score, which was calculated using dietary intake data. Generalized linear models were used for statistical analyses. Pink-collar workers had higher DII scores, indicating a potentially higher inflammatory diet than white-collar workers (mean: 2.18 vs. 1.89,  DII scores and dietary patterns differed among occupational groups and genders.
		                        		
		                        	
8.The impact of long working hours on daily sodium intake
Kyungho JU ; Yangwoo KIM ; Seung Hee WOO ; Juhyeong KIM ; Inah KIM ; Jaechul SONG ; Soo-Jin LEE ; Jeehee MIN
Annals of Occupational and Environmental Medicine 2024;36(1):e9-
		                        		
		                        			
		                        			  Long working hours are associated with an increased risk of cardiovascular disease, yet the underlying mechanism(s) remain unclear. The study examines how occupational factors like working hours, shift work, and employment status correlate with dietary choices and sodium intake, impacting hypertension risk. This study used data from the Korea National Health and Nutrition Examination Survey conducted between 2013 and 2020. The dataset included 8,471 respondents, all of whom were wage workers aged 20 or older and reported working at least 36 hours per week. Individuals who have been previously diagnosed with or are currently diagnosed with hypertension, diabetes, or dyslipidemia were excluded. The average daily sodium intake was assessed via a 24-hour dietary recall method. Average weekly working hours were categorized into 3 groups: 36–40 hours, 41–52 hours, and over 52 hours. Multiple logistic regression models were used. Study findings revealed that 83.7% of participants exceeded the recommended daily sodium intake of 2 g set by the World Health Organization. After adjusting for confounding factors, a positive correlation was observed between average working hours and daily sodium intake. Among males, statistical significance was found in the group with average weekly working hours of 41–52 hours (prevalence ratio [PR]: 1.17; 95% confidence interval [CI]: 1.05–1.30) and the group exceeding 52 hours (PR: 1.22; 95% CI: 1.09–1.38) when comparing the fourth quartile of daily sodium intake to the combined quartiles of Q1, Q2, and Q3. Among females, no significance was noted. Long working hours were associated with increased sodium intake, primarily among male workers. This connection is likely attributed to having less time for home-cooked meals, resulting in higher fast food consumption and dining out. A workplace intervention promoting healthy eating and reducing stress is essential to lower sodium consumption and mitigate hypertension risk.
		                        		
		                        	
9.Nutrition and food intake status among adults in Jeju according to sociodemographic characteristics and obesity
Hyunji HAM ; Hanbin KO ; Sumin KIM ; Youjeong JANG ; Jong-Seok BYUN ; Yoonsuk JEKAL ; Insuk CHAI ; Kyungho HA
Journal of Nutrition and Health 2024;57(6):667-684
		                        		
		                        			 Purpose:
		                        			This study evaluated the nutrition and food intake status among adults in Jeju, Republic of Korea, based on their sociodemographic characteristics and obesity. 
		                        		
		                        			Methods:
		                        			Nine hundred and forty-nine adults aged 19 years or older were included based on the 2022 Jeju Nutrition and Physical Activity Survey data. A dietary assessment was conducted using a one-day, 24-hour recall method, and the nutrition status was evaluated using the 2020 Dietary Reference Intakes for Koreans. The sociodemographic status included sex, age, education, and household income, and obesity was defined as a body mass index (BMI) of ≥ 25 kg/m 2 . 
		                        		
		                        			Results:
		                        			The mean age of the subjects was 49.8 years, and the overall prevalence of obesity was 48.4% (59.5% for males and 37.2% for females). The top three insufficient nutrients consumed at less than the estimated average requirement were calcium (77.7%), vitamin A (77.3%), and vitamin C (61.3%), while 40.9% of the subjects consumed fat as more than 30% of their total energy intake. The sodium intake was approximately 1.5 times higher than the chronic disease risk reduction intake level. In terms of food groups, the participants consumed more meat (148.2 g/day), seafood (69.0 g/day), potatoes, and starches (41.6 g/day) but consumed fewer vegetables (214.3 g/day) and less dairy (62.0 g/day) than Korean adults. The nutritional status and food intake patterns differed by the sociodemographic status. In addition, the obese group consumed more poultry and beverages than the non-obese group (p < 0.05 for all). 
		                        		
		                        			Conclusion
		                        			Adults in Jeju under-consume essential nutrients while over-consuming certain nutrients, such as fat and sodium. The nutritional status also varied according to the sociodemographic characteristics. These findings suggest that sociodemographic factors should be considered carefully when developing nutritional policies and programs to improve the nutritional status and address obesity among adults in Jeju. 
		                        		
		                        		
		                        		
		                        	
10.Relationship Between Trauma, Discrimination, and Suicidal Ideation Among North Korean Defectors
Kyungho LIM ; Jiwon BAEK ; Hokon KIM ; Ocksim KIM ; Sang Hui CHU ; Young-Chul JUNG
Psychiatry Investigation 2024;21(11):1203-1210
		                        		
		                        			 Objective:
		                        			This study aimed to explore the relationship between suicidal ideation and specific trauma and social discrimination among North Korean defectors. 
		                        		
		                        			Methods:
		                        			A total of 448 North Korean defectors were recruited from online and offline communities and counseling centers. Participants provided sociodemographic and psychiatric history information via an online survey. Various assessment tools, including the Traumatic Event Checklist for North Korean Defectors, International Trauma Questionnaire, Experiences of Discrimination Scale, UCLA Loneliness Scale (short-form), and World Health Organization Quality of Life Instrument, Short Form (WHOQOL-BREF), were employed. Multiple logistic regression analysis was used to examine the association between suicidal ideation and different types of trauma and discrimination. 
		                        		
		                        			Results:
		                        			Among participants, 38.4% reported experiencing suicidal ideation. The most prevalent trauma was “unwanted separation from spouse, parent, or sibling” (69.4%), and the primary form of discrimination was “unfairness during employment” (35.7%). After adjusting for relevant variables, experiencing “extreme life-threatening hardship,” “unwanted separation from a child,” and “discrimination in income” significantly increased the likelihood of suicidal ideation. Importantly, unlike other refugee groups, interpersonal violence like torture or sexual abuse did not significantly contribute to suicidal ideation in this population. These findings highlight the unique vulnerabilities of North Korean defectors and suggest that income-related discrimination, unwanted separation from children, and life-threatening hardships are critical factors influencing suicidal ideation. Limitations such as recall biases and the cross-sectional nature of the data should be acknowledged. 
		                        		
		                        			Conclusion
		                        			This study underscores the need for tailored psychiatric support for North Korean defectors, recognizing their distinctive needs compared to other refugee populations. 
		                        		
		                        		
		                        		
		                        	
            
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