Korean Journal of Community Nutrition

[Korean]
Current status of nutrition education media and its utilization in providing customized nutrition information for older adults in Korea: a scoping review based on the transtheoretical model and food literacy: Seojin Yun, Jiwon An, Kirang Kim; Korean J Community Nutr 2025;30(3):175-182. Published online June 30, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00094

Abstract PDF Supplementary Material PubReader ePub: Objectives
This study analyzes the status of nutrition education media among Korean older adults based on the transtheoretical model (TTM) and their food literacy to propose effective strategies for the development and utilization of educational media.
Methods
A literature review was conducted using The Joanna Briggs Institute (JBI) protocol. The literature search was performed using government and local government agency websites, as well as those of affiliated institutions, health and nutrition-related academic societies, and academic search engines. A total of 144 studies were identified, and after a cross-evaluation by two reviewers based on the literature selection criteria, 73 studies were included in the final analysis.
Results
Among the types of nutrition education media, card news had the highest proportion, followed by video media. The development and distribution of nutrition education media for older adults were primarily carried out by government and local government agencies, as well as related affiliated institutions, accounting for 80.8% (n = 59) of the total. When nutrition education topics in the media were categorized according to the stages of behavior change in the TTM, the largest proportion, 64.6% (n = 61), was applicable to the precontemplation and contemplation stages. When categorized by food literacy domains, all topics fell under the categories of nutrition and safety.
Conclusion
Nutrition education media for older adults were found to be primarily focused on knowledge acquisition and information delivery, making them mostly applicable to the precontemplation and contemplation stages of behavior change. The concept of food literacy addressed in the different types of media was limited to the domains of nutrition and safety, with no content covering the cultural and relational domains or the social and ecological domains. For tailored nutrition education, it is necessary to develop diverse educational materials that comprehensively reflect each stage of the TTM and all aspects of food literacy.

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[English]
Pilot evaluation of a cooking-based nutrition education program to promote vegetable intake among children in Seoul, South Korea: a single-group pre–post study: Sil-Ah Kim, Su-Jin Lee, Min-Ah Kim, Ji-Eun Oh, Sohyun Park, Hyun-Joo Ryou, Ji-Yun Hwang; Korean J Community Nutr 2025;30(4):249-260. Published online August 29, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00220

Abstract PDF PubReader ePub: Objectives
Food neophobia in children is often associated with limited exposure and familiarity to some foods. Cooking-based nutrition education (CBNE), which promotes acceptance through direct experience, may support the development of healthy eating habits. This study aimed to develop and implement a standardized CBNE program for school-aged children in Seoul, South Korea, and to evaluate its effectiveness by assessing changes in raw vegetable intake. Raw vegetable intake is an early indicator of the effectiveness of nutrition education on diverse topics in promoting healthy eating habits.
Methods
A single-group pre–post study was conducted with 37 children aged 6–11 years who participated in a 2-day CBNE program in October 2023. The participants completed pre- and post-education questionnaires and raw vegetable intake assessments. Four low-preference vegetables (bell pepper, carrot, cucumber, and tomato) were selected and served raw (25 g each) before and after the program. Intake changes were analyzed using paired t-tests, and Pearson’s correlation and hierarchical regression analyses were performed to identify predictors.
Results
Total raw vegetable intake significantly increased post-education (P = 0.008), particularly for carrots (P = 0.023). By subgroup, raw vegetable intake significantly increased in girls, upper-grade students, and those who consumed four or more vegetable side dishes per meal. Hierarchical regression analysis revealed that while vegetable preference was initially significant, vegetable-related experiences (β = 0.395, P = 0.026) and diversity of vegetable side dishes per meal (β = 0.403, P = 0.032) were stronger predictors in the final model (adj R2 = 0.333).
Conclusion
The CBNE program may enhance vegetable intake in children. Although preference remained the strongest individual factor, vegetable experience and the diversity of vegetable side dishes per meal had a greater combined effect. These findings underscore the importance of repeated and diverse exposure, not only by supporting previous studies that link such exposure to increased intake but also by suggesting that environmental support may be essential for sustaining healthy eating habits.

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[Korean]
A study on the diet and nutrition management status and educational needs in elderly care facilities in Korea: focus group interviews with staff from children’s and social welfare meal management support centers and elderly care facilities: Seo Young Choi, Hyun joo Ryou, Jieun Oh; Korean J Community Nutr 2025;30(4):286-295. Published online August 29, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00143

Abstract PDF PubReader ePub: Objectives
In this study, we identified the current status of meal and nutritional management in elderly care facilities and analyzed the educational needs of employees, with the goal of proposing effective support strategies for nutritional management and to suggest directions for developing customized educational content.
Methods
Between May and June 2024, we conducted nine focus group interviews with 22 participants recruited from 10 cities across four major regions of Korea, including 13 employees of children and social welfare meal management support centers and nine employees of elderly care facilities.
Results
Our findings revealed that supporting algorithm-based dietary planning, improving communication with caregivers, and providing flexible, practical education tailored to facility conditions, are key elements for enhancing nutritional management in elderly care facilities. To facilitate the translation of these insights into practice, it will be necessary to strengthen collaboration between centers and facilities, combined with efforts to improve the operational environment for applying the algorithm and providing continuous educational support.
Conclusion
The findings of this study emphasize the importance of on-site education and sustainable support strategies based on the diet and nutritional management status and education needs of elderly care facilities. Strengthening practical education, communication systems, and center–facility collaboration is required, and future research needs to verify the efficacy of these measures and define a sustainable support system based on quantitative analysis.

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[English]
Total sugar intake and its contributed foods by age groups in Koreans using the 8th (2019–2021) Korea National Health and Nutrition Examination Survey: a cross-sectional study: Hyejin Yu, Sang-Jin Chung; Korean J Community Nutr 2024;29(3):222-233. Published online June 30, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.3.222

Abstract PDF PubReader ePub: Objectives
This study was conducted to investigate the status of total sugar intake and contributing foods in Korea according to age groups.
Methods
This study used 24-hour dietary recall data from the 8th Korea National Health and Nutrition Examination Survey (2019–2021) to investigate the nutritional and total sugar intake status among Koreans. A total of 18,338 research participants (≥3 years old) were included in this study. To analyze the types of foods contributing to total sugar intake, these foods were categorized into 15 types. Moreover, we examined the total sugar intake and ranked the most consumed foods by age groups (3–11 years, 12–18 years, 19–34 years, 35–49 years, 50–64 years, over 65 years). A survey procedure was employed for statistical analysis.
Results
The energy intake ratio from total sugars was approximately 12%–15%, which was within the recommended range. However, the proportion of individuals consuming total sugar exceeding 20% of their total caloric intake is nearly 20%, raising concerns about excessive sugar consumption. Furthermore, the percentage of participants whose intake of sugar from processed foods exceeded 10% of their total calories was highest in the 12–18 age group at 37.1%, followed by the 3–11 age group at 35.2%, and the 19–34 age group at 34.0%. Carbonated drinks, cola, and cider were the primary foods consumed by children and adolescents (3–18 years old) and young adults (19–34 years old). For middle-aged and older adults, mixed coffee with sugar and cream was a prominent contributor to sugar intake.
Conclusions
This study investigated sugar consumption patterns among Koreans, finding the principal foods contributing to this intake. Identifying these contributors is pivotal, given their potential impact on public health.

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[English]
Understanding the charactersitics and types of single-person households based on food purchase frequencies in Korea: a cross-sectional study using the 2023 Consumer Behavior Survey for Foods: So-Yun Kim, Youngmin Nam, Jong-Youn Rha, Haerang Lee; Korean J Community Nutr 2025;30(1):27-39. Published online February 28, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00031

Abstract PDF PubReader ePub: Objectives
This study investigated the differences in food purchase frequency among single-person households by gender and age group and explored the characteristics of single-person household groups according to their food purchase patterns.
Methods
Utilizing data from the 2023 Consumer Behavior Survey for Foods conducted by the Korea Rural Economic Institute, this study examined food purchase frequencies among 966 single-person households. Data were analyzed using Rao-Scott chi-square tests, ANCOVA, ANOVA, and K-modes hierarchical cluster analysis.
Results
Significant differences were observed in the food purchase frequencies of single-person households for fresh and convenient food. Women displayed higher purchase frequencies for fish, vegetables, and fruits, whereas men showed higher purchase frequencies for convenient foods (P < 0.005). Single-person households aged 39 years and younger exhibited lower purchase frequencies for vegetables (P < 0.005) and fish (P < 0.001) and substantially higher frequencies of convenient food purchases (P < 0.001). Additionally, this study identified three distinct single-person household groups based on food purchase pattern: the “nutrition-conscious” group, which exhibited high purchase frequency for fresh foods; the “convenience-seeking” group, which showed high purchase frequency for all types of convenient foods; and the “passive food consumer” group, which displayed relatively low purchase frequency for both fresh foods and convenient foods. The socio-demographic characteristics of single-person households differed significantly across these three groups, with the “passive food consumer” group and “convenience-seeking” group exhibiting lower healthy eating competency (MN(nutrition-conscious group) = 3.68, MP(passive-food-consumer group) = 3.40, MC(convenience-seeking group) = 3.52, P < 0.001), safe eating competency (MN = 3.87, MP = 3.57, MC = 3.77, P < 0.001), and satisfaction (MN = 3.36, MP = 3.23, MC = 3.25, P = 0.04) than the “nutrition-conscious” group.
Conclusion
This study underscores the need for targeted nutrition programs to address the unique needs of single-person households depending on their characteristics. Specifically, this study highlights the importance of targeted interventions for “convenience-seeking” and “passive food consumer” to promote dietary competency and encourage healthy dietary behavior.

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[English]
Screen time, mealtime media use, and dietary behaviors in Korean preschoolers : a cross-sectional study: Young-Hee Han, Saerom Shin, Eun Yeol Woo, Hye-Kyung Park, Taisun Hyun; Korean J Community Nutr 2023;28(3):206-219. Published online June 30, 2023; DOI: https://doi.org/10.5720/kjcn.2023.28.3.206

Abstract PDF: Objectives
Screen time refers to the time spent using screen media, such as televisions, smartphones, computers, or tablets. Excessive exposure to screen media has been reported to negatively impact young children’s health and development, including overweight, short sleep duration, and language delays. This study examined the association of screen time and mealtime media use with dietary behaviors among preschool children.
Methods
A cross-sectional survey was conducted on parents of children aged three to five years using the online questionnaires of the Nutrition Quotient for Preschoolers (NQ-P) and the Dietary Screening Test (DST). Data from 261 children’s parents were analyzed.
Results
Of the 261 children, 96.9% used screen media, 55.6% used screen media for two hours or more daily, and 30.7% were exposed to screen media during meals. The NQ-P scores were significantly lower in the children with longer screen time and mealtime media use. Children who used screen media for two hours or more and those exposed to screen media during meals consumed kimchi less frequently and confectionery and sugar-sweetened beverages more frequently than children who used less than two hours and were not exposed to screen media during meals. In addition, they were more likely to be picky about food, refuse to eat, and less likely to feed themselves than children with shorter screen time and no mealtime media use.
Conclusions
This study reported an association between unhealthy dietary behaviors, feeding difficulties, and screen time and mealtime media use among preschool children. Further research should explore effective strategies for reducing children’s screen time.

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[Korean]
Behavioral intention toward planetary health diet among adult users of government worksite cafeterias in Seoul, South Korea: a mixed-methods study based on the theory of planned behavior and focus groups interviews: Ji-Won Kang, Su-Jin Lee, Sil-Ah Kim, Ji-Yun Hwang; Korean J Community Nutr 2025;30(3):224-236. Published online June 30, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00108

Abstract PDF PubReader ePub

Objectives
To reduce urban carbon emissions, in this study, we aimed to suggest strategies for disseminating the planetary health diet (PHD) guidelines to adult cafeterias in a government worksite in Seoul based on the theory of planned behavior (TPB) and focus group interviews (FGI).
Methods
A total of 132 adults who worked at a government worksite in Seoul and used its cafeteria were included for a TPB-based survey. Factor analyses and multiple regression were used to investigate the relationships between attitude (cognitive•affective), subjective norms, and perceived behavioral control (PBC, internal•external) and the behavioral intention to adopt the PHD. To identify the contextual factors related to PHD dissemination, 14 participants underwent in-depth interviews.
Results
Affective attitudes and PBC (internal•external) constructs of the TPB were significantly related with the intention to adopt PHD: external PBC (β = 0.324, P < 0.001), internal PBC (β = 0.269, P < 0.01), and affective attitudes (β = 0.226, P < 0.05). The FGI results highlighted the insufficiency of simply providing healthy meals to encourage the adoption of PHDs, but that menu development and natural acceptance strategies are needed to increase palatability. In addition, the need for strategies to promote PHDs at an organizational level was identified, as it is directly influenced by the company of partners with whom one dines. Furthermore, users' perceptions of how “Meals for the Planet” are delivered and suggestions for its improvement were also interpreted.
Conclusion
Our results suggest that users' beliefs, convictions, and emotions are important while promoting or educating individuals about sustainable PHDs. Our findings are expected to help local governments or private group cafeterias that wish to introduce PHDs in the future, given the growing importance of environmentally conscious eating.

Citations

Citations to this article as recorded by

Planetary Health Diet Adherence in Korean Adults: Association with the Korean Healthy Eating Index
Su-Jin Lee, Ji-Yun Hwang
Nutrients.2025; 17(19): 3060. CrossRef

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1 Crossref

[Korean]
Effects of night eating on oral health characteristics and symptoms of poor oral health in adolescents: a cross-sectional study using the 18th Korea Youth Risk Behavior Survey: Seung–Hee Hong; Korean J Community Nutr 2025;30(2):150-162. Published online April 29, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00038

Abstract PDF PubReader ePub: Objectives
To determine the association between night eating habits and oral health in adolescents.
Methods
Data from the 18th Korea Youth Risk Behavior Survey conducted in 2022 were analyzed. The study included 51,850 middle and high school students and assessed the frequency of night eating per week, dietary habits, oral health characteristics, and factors affecting the presence of symptoms of poor oral health.
Results
Almost thirty-seven percent (36.6%) of Korean adolescents have eaten at night one to two times per week and 23.0% more than three times per week. An increased frequency of night eating was associated with poor dietary habits. Adolescents who consumed more at night were less likely to have breakfast, drink water, and eat fruit, while their consumption of fast food, sweet drinks, and high-caffeine drinks increased (P < 0.001). An increased frequency of night eating was also associated with poor oral health. In a logistic regression analysis, more frequent night eaters were significantly less likely to brush their teeth at least three times per day (odds ratio [OR], 0.78; 95% confidence interval [CI], 0.75–0.82; P for trend < 0.001), and brush their teeth before going to sleep (OR, 0.70; 95% CI, 0.65–0.75; P for trend < 0.001), while they were more likely to experience sealant (OR, 1.19; 95% CI, 1.13–1.26). More frequent night eaters were significantly more likely to have tooth fracture (OR, 1.41; 95% CI, 1.30–1.53; P for trend < 0.001), tooth pain when eating (OR, 1.59; 95% CI, 1.50–1.67; P for trend < 0.001), toothache (OR, 1.60; 95% CI, 1.52–1.70), and bad breath (OR, 1.51; 95% CI, 1.43–1.60).
Conclusion
Our findings suggest that frequent night eating is linked to symptomatically poor oral health in adolescents. Therefore, oral health education programs related to dietary habits are necessary to reduce the potential of night eating to negatively influence dietary habits and oral health.

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[Korean]
Analysis of the relationship between foodservice staffing and foodservice quality in elderly care facilities in Korea: a cross-sectional study: Hyeonjeong Kim, Jinhee Kwon, Jungsuk Lee; Korean J Community Nutr 2025;30(4):296-308. Published online August 29, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00122

Abstract PDF PubReader ePub: Objectives
This study was performed to investigate the relationship between foodservice staffing and foodservice quality in elderly care facilities.
Methods
Data was obtained from the Korean Long-term Care Institute Database and used to analyze 2,084 elderly care facilities operating on-site foodservice. The presence of dietitians and staffing levels for cooking personnel were analyzed by categorizing size according to staffing criteria. Foodservice quality was assessed using food sanitation management and meal service provision as indicators. Descriptive statistical analysis, chi-square test, Fisher’s exact test, and Cochran-Mantel-Haenszel test were conducted to analyze relationships between staffing level and foodservice quality.
Results
Presence of a dietitian correlated with food sanitation management and meal service provision in groups with 30 or more recipients (P = 0.027, P = 0.049). Elderly care facilities with dietitians had better foodservice quality. After adjusting for size, the presence of dietitians was also found to correlate with food sanitation management (P = 0.024). Staffing levels for cooking personnel were found to correlate with meal service provision only in groups with 38 to 62 recipients. Institutions with larger staffs provided better meal service quality compared to those with basic staffing.
Conclusion
Inclusion of a dietitian and cooking staff size each contribute to enhanced foodservice quality in elderly care facilities, with dietitian inclusion showing a particularly significant association with food sanitation management. These findings suggest the need to revise current staffing and related regulatory standards to optimize deployment of foodservice personnel in elderly care settings. Future studies should focus on developing effective policies for securing qualified foodservice staff and establishing robust quality management systems to enhance overall foodservice quality in long-term care facilities.

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[Korean]
Adult consumers’ perception of plant-based meat substitutes and related factors in Korea: a cross-sectional study: Yun-A Lee, Mi-Kyeong Choi; Korean J Community Nutr 2025;30(3):237-248. Published online June 30, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00115

Abstract PDF PubReader ePub: Objectives
We aimed to examine differences in experience, consumption, and perception of plant-based meat substitutes according to consumer characteristics, and to identify associated factors.
Methods
In this cross-sectional study, 410 adult consumers were surveyed regarding their eating habits, experience with and consumption of plant-based meat substitutes, and their intentions and perceptions of these products. Statistical analyses were conducted.
Results
Approximately 84% of participants had heard of plant-based meat substitutes, most commonly through mass media and social media. Overall, 65.12% reported having consumed plant-based substitutes, with higher consumption observed among older and more health-conscious individuals. The most common reason for consumption was curiosity about new foods (36.33%), whereas the primary reason for non-consumption was lack of opportunity (61.54%). Additionally, 77.32% of respondents indicated willingness to try plant-based substitutes, with taste identified as the most influential factor in purchasing decisions. Perception of plant-based meat substitutes was rated 3.82 out of 5, with significantly higher awareness among individuals aged 50–64, married individuals, housewives, graduate students or graduates, and those with irregular meal times or infrequent dining out.
Conclusion
Older, married, more educated, and health-conscious individuals who dine out less frequently tend to have higher perception scores for plant-based meat substitutes, along with greater experience and stronger future use intention.

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[Korean]
Survey on consumer perceptions, health benefits and preferences of kindergarten and school foodservices in Korea, including related keywords reported in newspaper: a mixed-methods study: Gyoungok Gang, Chaewon Park, Hyeja Chang; Korean J Community Nutr 2025;30(4):309-320. Published online August 29, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00199

Abstract PDF PubReader ePub: Objectives
With the rapid development of social culture, the perception of kindergarten and school foodservice, as well as opinions on its health benefits, has changed significantly. However, research on this topic remains scarce. We conducted a survey in South Korea on consumers’ perceptions, healthiness, and preferences regarding kindergarten and school foodservice.
Methods
With the nationwide cooperation of 17 city and provincial education offices, online and offline surveys were conducted targeting the parents of kindergarten and lower-grade elementary school children, as well as upper-grade elementary, middle, and high school students. In addition, keywords in newspaper reports were analyzed using the Big Kinds platform. A total of 532 valid questionnaires were collected, and statistical analysis was performed using IBM SPSS Statistics version 27.0 (IBM Co.).
Results
The average age of the parents and students was 40 and 12.5 years, respectively, with 36.4% of the students attending schools in the Seoul and Gyeonggi areas. The main keywords reported in newspaper articles, as analyzed using the Big Kinds platform, were “eco-friendly agricultural products,” “food ingredients,” “safety,” and “marine products.” The perception of kindergarten and school foodservice was very positive, especially regarding the attributes of safe ingredient use (4.44), menu variety (4.29), cafeteria cleanliness (4.31), cleanliness of plates, spoons, and utensils (4.24), thorough hygiene management (4.2), nutritional excellence (4.24), and support for proper eating habits (4.18). The healthiness of school foodservice was highly rated, although there is still room for improvement in terms of “not serving fried foods more than twice a week”. In terms of preference for school meals, the most preferred items were meat side dishes, followed by chicken, noodles, fried food, beverages, and bread. In contrast, soybean paste soup, vegetables, and mixed-grain rice received relatively low preference.
Conclusion
The results described above may be used to develop educational programs or policies that inform students and parents about the goals of school foodservice and help address common misunderstandings.

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[English]
The dietary factors associated with sleep duration in postmenopausal middle-aged women: a cross-sectional study using 2019–2023 Korea National Health and Nutrition Examination Survey data: Eugene Shim; Korean J Community Nutr 2025;30(3):197-213. Published online June 30, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00052

Abstract PDF PubReader ePub: Objectives
This study aimed to analyze dietary factors associated with sleep duration in postmenopausal middle-aged women using data from the Korea National Health and Nutrition Examination Survey (KNHANES), with particular emphasis on the postmenopausal period.
Methods
A total of 3,040 postmenopausal women aged 40–64 years from the 2019–2023 KNHANES were included. Sleep duration was classified into four categories: “appropriate sleep duration” (ASD; 7–9 hours), “short sleep duration” (6–7 hours), “very short sleep duration” (VSSD; < 6 hours), and “long sleep duration” (LSD; > 9 hours). Nutrient and food intake were compared among groups using analysis of covariance. Multinomial logistic and polynomial regression models assessed associations, adjusting for demographic and health covariates.
Results
The VSSD group had higher body mass index and waist circumference than the ASD group, despite lower total energy intake, and also consumed more snack energy and skipped breakfast and dinner more often. This group also had lower intakes of monounsaturated fatty acids and nuts and seeds. In the late menopausal group, greater consumption of cereal grains, fish and shellfish, and beverages was associated with elevated LSD risk. Conversely, higher folate intake in the early menopausal group was inversely associated with VSSD risk. Cholesterol intake was positively associated with LSD risk in both groups. A negative nonlinear association between sleep duration and dietary intake was observed in the early menopausal group when polyunsaturated fatty acid intake exceeded 19.86 g/day and riboflavin intake exceeded 1.76 mg/day. In the late menopausal group, riboflavin intake was strongly correlated with increased LSD risk (odds ratio = 4.776, P = 0.004). Sugar and beverage intake showed a positive linear relationship with sleep duration at average intake levels.
Conclusion
Dietary factors associated with sleep duration differed by postmenopausal period, with specific nutrients and food groups exhibiting variable associations with sleep duration above mean intake levels.meS

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[Korean]
Development and applicability evaluation of a nutrition education program for residents and users of disability social welfare facilities in Korea: a mixed-methods study: Jin-kyung Kim, Kyoung-min Lee, Min-sun Jeon; Korean J Community Nutr 2025;30(1):64-74. Published online February 28, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00017

Abstract PDF PubReader ePub: Objectives
This study aimed to develop a nutrition education program based on social cognitive theory to promote the health of individuals using facilities for people with disabilities. It also sought to evaluate the applicability of the educational materials through assessments by counselors at the Social Welfare Food Service Management Support Center.
Methods
A group of six experts developed the program based on a needs assessment of nutrition education in facilities for individuals with disabilities. Applicability was evaluated through an online survey of 26 counselors from Social Welfare Food Service Management Support Centers nationwide in July 2023, and the results were analyzed.
Results
The nutrition education program includes a basic course on personal hygiene, dining etiquette, picky eating prevention, and obesity management. The advanced course covers dietary management for chronic diseases, such as meal planning for hypertension, diabetes management, and dietary principles for dysphagia. Additionally, lecture PPTs, individual activity sheets, and experiential teaching aids were developed. Applicability evaluations showed high scores, with the teaching-learning plan and PPT averaging 4.15 and the experiential teaching aids scoring 4.17, all above 4.0.
Conclusion
This study developed a nutrition education program for individuals with disabilities and assessed its applicability and usability. Implementing this program in disability welfare institutions could enhance health promotion and improve the quality of life for individuals with disabilities.

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[English]
Impact of postoperative dietary types on nutrition and treatment prognosis in hospitalized patients undergoing oral and maxillofacial surgery: a comparative study: Sung Bin Youn, Se-Hui Ahn, Dong-Ho Cho, Hoon Myoung; Korean J Community Nutr 2024;29(2):129-143. Published online April 30, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.2.129

Abstract PDF

Objectives
The objective of this study is to compare a nutritionally balanced soft blend diet (SBD) with a soft fluid diet (SFD) on the health of inpatients who have undergone oral and maxillofacial (OMF) surgery, ultimately aiming to enhance care outcomes, improve healthrelated quality of life (QOL), and increase satisfaction with the hospital.
Methods
Thirty-two patients were randomized into two groups: sixteen received SFD and sixteen received SBD. Anthropometric, laboratory evaluations were conducted upon admission and discharge. Patients filled out questionnaires on demographics, diet satisfaction, food intake amount, and health-related QOL on the day of discharge, assessed using the EuroQoL 5 Dimensions 3 Level and EuroQoL Visual Analogue Scale (EQ-VAS) instruments. Data were analyzed with descriptive statistics, χ 2 tests for group differences, and paired nonparametric t-tests for within-group comparisons. The Mann-Whitney U test evaluated inter-group differences in preoperative weight and body mass index (BMI), postoperative changes, meal satisfaction, intake, health-related QOL, and self-assessed health status. P-values were set at a significance level of 0.05.
Results
The SBD group had higher dietary intake (63.2% vs. 51.0%) and greater diet satisfaction (80.6 vs. 48.1, P < 0.0001) compared to SFD group. Health-related QOL, measured by EQ-VAS, was better in SBD group (70.3 vs. 58.8, P < 0.05). Postoperative weight and BMI decreased in SFD group but increased in SBD group (P < 0.01). Changes in laboratory results showed more stability in the SBD group. No postoperative infections were reported in SBD group, whereas SFD group had a 31.25% complication rate.
Conclusions
While SFD is often recommended after OMF surgery to protect oral wound healing process, our study reveals that SBD not only enhances physical and psychological outcomes but also, somewhat unexpectedly, supports wound healing and reduces complications. Essentially, SBD promotes physical recovery and enhances health-related QOL than SFD by supporting both somatic and mental healing aspects.

Citations

Citations to this article as recorded by

Comparative Evaluation of Effect of Therapeutic Nutrition on Serum Albumin Levels and Nutritional Indices in Patients Undergoing Open Reduction and Internal Fixation for Maxillofacial Fractures – A Prospective Clinical Trial
B. R. Rajanikanth, Amruta T. Achar, Kavitha Prasad, Hema Arvind
Journal of Maxillofacial and Oral Surgery.2025; 24(1): 110. CrossRef
Nutritional management for breast cancer patients
Minjeong Kim, Minkyoung Lee, Jisun Sa
The Ewha Medical Journal.2025;[Epub] CrossRef
A Holistic Approach to Postendodontic Pain Management: A Narrative Review
Hmoud A. Algarni
Journal of Pharmacy and Bioallied Sciences.2024; 16(Suppl 5): S4262. CrossRef

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3 Crossref

[English]
Safety education status and needs priorities of Korean military food service personnel using the Borich Needs Assessment and the Locus for Focus model: a cross-sectional study: Jeongeun Park, Eunsil Her; Korean J Community Nutr 2025;30(4):261-273. Published online August 29, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00185

Abstract PDF PubReader ePub: Objectives
Since the enactment of the Serious Accidents Punishment Act in Korea in 2021, the importance of safety management in food service facilities has increased. This study was conducted to examine the status of safety education and to identify educational needs for safety accident prevention among army food service personnel.
Methods
This study included 157 food service personnel from Army units located in Gyeongsangnam-do. Participants were divided into two groups based on the daily number of meals served. Demographic characteristics, the status of safety education, and priority for safety accident prevention education were evaluated.
Results
A total of 97.5% of participants received safety education, with 60.8% attending at least monthly. “Lecture” (63.4%) was the most commonly used educational method. The preferred educational methods were “Lecture” (23.5%) and “Counselling” (23.5%), showing significant group differences (P < 0.001). A total of 79.6% of participants reported applying the educational content in their performance. The mean importance score for safety accident prevention (4.78) was higher than the performance score (4.44), with significant differences between the two groups observed in the importance scores (P < 0.05). “Slip & burn” had the highest importance score, while “Electric shock and fire” had the highest performance score. The educational needs analysis revealed that the highest priority item for the < 100 meals group was “When moving heavy items, an assistive device or assistance from colleagues should be utilized”, while for the ≥ 100 meals group, it was “When using a vegetable cutter or grinder, use an exclusive stick.”
Conclusion
This study can serve as a foundational database for developing customized safety education programs tailored to Korean army food service personnel.

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[English]
Associations between diet quality and regional factors in Korea vary according to individuals’ characteristics: a cross-sectional study: Hyunmi Han, Clara Yongjoo Park, Jeonghwa Lee; Korean J Community Nutr 2025;30(4):274-285. Published online August 29, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00157

Abstract PDF Supplementary Material PubReader ePub: Objectives
Although diet quality is known to be associated with environment and individuals’ characteristics, these have not been studied together. We determined the association of diet quality with regional factors stratified by individuals’ sociodemographic characteristics.
Methods
This study used nationally representative survey data on regional factors (2010–2020) and the Korea National Health and Nutrition Examination Survey data on individuals’ sociodemographic characteristics (2013–2018). Community-dwelling Koreans aged ≥ 20 were included (n = 26,853). Regions were categorized into metropolitan cities or provinces and subsequently according to regional factors (level of educational attainment, income per capita, food security status, physical activity facilities, time to the nearest large retailer, and internet use of the region). Individuals’ sociodemographic characteristics included age, education status, income, and number of household members. Diet quality was assessed using the Korean Healthy Eating Index (KHEI).
Results
In the entire population, education status of metropolitan cities was positively associated with the KHEI. Shorter time to retailers and higher internet use were positively associated with the KHEI in metropolitan residents with higher income levels but negatively associated with the KHEI in those with lower income status. Among provincial residents with a low education status or income, regional physical activity facilities were positively associated with the KHEI.
Conclusion
The association between diet quality and regional factors varied depending on the resident’s sociodemographic characteristics. Both regional and individual sociodemographic factors must be considered to address gaps in nutritional equity.

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[Korean]
Impact of a public health center nutrition education program on patients with type 2 diabetes in a primary care-based chronic disease management project: a pilot intervention study: Haerim Yang, Yoo Kyoung Park, Ji-hyun Lee, Hee-Sook Lim, Heejoon Baek, Hyejin Lee, Haeran Park, Pyunghwa Lee, Jooyoun Chung, Won Gyoung Kim; Korean J Community Nutr 2024;29(6):492-503. Published online December 31, 2024; DOI: https://doi.org/10.5720/kjcn.2024.00018

Abstract PDF PubReader ePub: Objectives
We investigated the impact of an advanced “Nutrition Education Program” on patients with Diabetes mellitus, type 2 from public health centers enrolled in a primary health care-based chronic disease management project. This 12-week dietary management program was developed by the Korea Health Promotion and Development Institute. We assessed if this program improved glycemic control and other health indicators through dietary and nutritional improvements.
Methods
Seventeen patients with Diabetes mellitus type 2 were enrolled in the “Nutrition Education Program.” These patients were referred to public health centers for lifestyle management based on physician assessments at local clinics that were participating in a pilot project on primary health care-based chronic disease management. The participants attended the program comprising face-to-face basic, in-depth, and practical training sessions at the health center during the third, fifth, and seventh weeks, respectively. Anthropometric measurements, body composition analysis, blood biochemical characteristics, nutritional knowledge, and self-efficacy evaluation were performed before and after the program. Data were analyzed using SPSS ver. 28.0.
Results
The mean age of the participants was 62 years, and most participants were female (14, 82.4%). No significant changes in patients’ anthropometric measurements or body composition were observed after the training. However, significant reductions were observed in the blood biochemical characteristics, including glycated hemoglobin, total cholesterol, and low-density lipoprotein levels. Additionally, patients’ nutritional knowledge and self-efficacy scores increased significantly.
Conclusions
The “Nutrition Education Program” helped in improving glycemic control and other health indicators in patients with Diabetes mellitus type 2. Further research is required to objectively confirm the long-term and sustained effects of the program in a controlled study. Trial Registration Clinical Research Information Service Identifier: KCT0010010

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[Korean]
Analysis of the relationship between sugar intake and cancer prevalence: a cross-sectional study using the 8th Korea National Health and Nutrition Examination Survey: Hye-Ryun Kim, Soo-Kyung Lee; Korean J Community Nutr 2025;30(1):89-102. Published online February 28, 2025; DOI: https://doi.org/10.5720/kjcn.2024.00339

Abstract PDF Supplementary Material PubReader ePub

Objectives
This study aimed to analyze the association between sugar intake and cancer risk among Korean adults aged 19 years and older.
Methods
A total of 13,016 adults aged 19 years and older who participated in the 8th Korea National Health and Nutrition Examination Survey from 2019 to 2021 were included. Sugar intake was assessed in terms of both absolute intake and sugar energy rate. Sugar intake was divided into quartiles, while sugar energy rate was categorized into three groups (< 10%, 10%–20%, > 20%) based on the 2020 Dietary Reference Intakes for Koreans and into two groups (< 10%, ≥ 10%) based on WHO recommendations. Cancer prevalence was determined using cancer-related survey questions. The association between sugar intake and cancer prevalence was analyzed by sex and cancer type using logistic regression. All statistical analyses were performed using IBM SPSS statistics 29.0 (IBM Co.).
Results
From 2019 to 2021, sugar intake significantly declined with age in both men and women (P for trend < 0.001), with the highest intake observed in the 19–29 age group (61.38 g). Men consumed significantly more sugar than women across all age groups except for the 50–64 and 65–74 groups (P < 0.05). However, the sugar energy rate was significantly higher in women than in men (P < 0.05). While the association between sugar intake and cancer prevalence varied across regression models and cancer types, cervical cancer consistently showed a significant association with sugar intake (P < 0.05).
Conclusion
The association between sugar energy rate and the prevalence of premenopausal cervical cancer was consistent and significant. Given that women had a higher sugar energy rate than men, the relationship between sugar intake and cancer prevalence in women warrants further investigation. Longitudinal studies with more detailed sugar intake assessments are needed.

Citations

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A study on hypertension relevant nutritional knowledge and dietary practices in Chinese college students studying in South Korea
Zhe Sun, Wookyoun Cho
Journal of Nutrition and Health.2015; 48(5): 441. CrossRef
Influence of the Size of the Spoon on the Eating rate, Energy Intake and the Satiety Levels of Female College Students
Yang Hee Hong, Young Suk Kim, Hyun Jung Kwon, Do Seok Chang, Dong Geon Kim, Un Jae Chang
Korean Journal of Community Nutrition.2015; 20(5): 375. CrossRef
Dietary behavior and nutritional status among Chinese female college students residing in Korea
Gaowei, Soyeon Kim, Namsoo Chang, Ki Nam Kim
Korean Journal of Nutrition.2013; 46(2): 177. CrossRef

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[English]
Food and nutrient intake in pregnant women with singletons or multiples and post-delivery changes in intake in Korea: an observational study: Cheawon Lee, Dahyeon Kim, Yoon Ha Kim, Myeong Gyun Choi, Jong Woon Kim, Clara Yongjoo Park; Korean J Community Nutr 2025;30(1):1-15. Published online February 28, 2025; DOI: https://doi.org/10.5720/kjcn.2024.00325

Abstract PDF Supplementary Material PubReader ePub

Objectives
Nutrient intake during pregnancy and lactation is crucial for the health of both mother and offspring. Diet and nutrient metabolism potentially vary according to ethnicity and fetal number; nevertheless, recent studies validating this are inadequate. Furthermore, few studies have tracked changes in intake after delivery. We compared the food and nutrient intakes between pregnant women in Korea carrying singletons and multiples during late pregnancy and assessed their changes through postpartum.
Methods
Ninety-eight pregnant women were recruited from Chonnam National University Hospital between January 2019 and December 2023, and 48 responded to follow-up. Third trimester and postpartum intake were assessed via food frequency questionnaires and supplement questionnaires. Student’s t-test, Mann–Whitney U test, chi-square test, paired t-test or Wilcoxon signed-rank test was performed and adjustments were made for covariates.
Results
Nutrient intake was generally adequate relative to the Dietary Reference Intakes for Koreans, with no differences between singleton- and multiple-pregnancy women. Sixty-six of 98 (67%) pregnant women consumed meat, fish, vegetables, and fruit daily. Dairy intake was low, while the mean iron intake during pregnancy reached 54.2 ± 34.0 mg/d, exceeding the tolerable upper intake level, mainly owing to supplements. Postpartum fruit and vitamin C intake decreased, with no significant differences between breastfeeding and non-breastfeeding women.
Conclusion
Dietary intake did not significantly differ between Korean singleton- and multiple-pregnancy women. Dairy intake was low and iron intake was excessive. Fruit intake decreased after delivery; however, difference in dietary intake according to breastfeeding status was minimal. Nutritional education may be necessary to promote a balanced diet in pregnant and postpartum women. Trial Registration: Clinical Research Information Service Identifier KCT0005118.

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Placental cadmium and its association with maternal diet and offspring growth in Koreans
Dahyeon Kim, Cheawon Lee, Yoon Ha Kim, Myeong Gyun Choi, Jong Woon Kim, Clara Yongjoo Park
Nutrition Research and Practice.2025; 19(3): 473. CrossRef

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[Korean]
Comparative study on the health and dietary habits of Korean male and female adults before and after the coronavirus disease 2019 pandemic: utilizing data from the 8 th Korea National Health and Nutrition Examination Survey (2019–2021): Chaemin Kim, Eunjung Kim; Korean J Community Nutr 2024;29(1):65-80. Published online February 29, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.1.65

Abstract PDF

Objectives
This study aims to compare changes in physical factors, health behaviors, eating habits, and nutritional intake among Korean male and female adults over a period of three years (2019–2021) before and after the outbreak of coronavirus disease 2019 (COVID-19).
Methods
This study utilized raw data from the 8^th Korea National Health and Nutrition Examination Survey (2019–2021). The participants in this study included 6,235 individuals in 2019, 5,865 individuals in 2020, and 5,635 individuals in 2021. Individuals whose daily energy intake was less than 500 kcal or exceeded 5,000 kcal were excluded from the study.
Results
In comparison to 2019, overweight/obesity rates, weight, waist circumference, weekend sleep hours, and resistance exercise days/week increased in both male and female during the COVID-19 pandemic. Regarding eating habits, the proportions of people skipping breakfast, not eating out, consuming health supplements, and recognizing nutritional labels increased in 2020 and 2021, whereas the rate of skipping dinner decreased. Total energy intake has continued to decrease for the two years since 2019. A comparison of nutrient intake per 1,000 kcal before and after the outbreak of COVID-19 revealed that intake of nutrients, including protein, phosphorus, iron, vitamin A, riboflavin, and niacin increased, while folic acid intake decreased. In male, calcium, phosphorus, riboflavin, and niacin intakes increased, whereas iron, vitamin C, and folic acid intakes decreased. In female, phosphorus, iron, vitamin A, and riboflavin intake increased significantly, while protein and niacin intake decreased significantly.
Conclusions
After COVID-19, the obesity rate, breakfast skipping rate, health supplement intake, and nutritional label use increased, while the frequency of eating out, dinner skipping rate, and total energy intake decreased. These environmental changes and social factors highlight the need for nutritional education and management to ensure proper nutritional intake and reduce obesity rates in the post-COVID-19 era.

Citations

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Status of Use of Protein Supplement Products according to the Health Concerns of Adults in Their 20s and 30s
Cho-In Oh, Bok-Mi Jung
Journal of the East Asian Society of Dietary Life.2025; 35(1): 9. CrossRef
A study on regional differences in dietary behaviors and satisfaction in Korea focusing on urban and rural comparisons: a cross-sectional study
Jong-Youn Rha, Sohyun Kim, Hae-Rang Lee, Juhyeon Kil
Korean Journal of Community Nutrition.2025; 30(2): 140. CrossRef
How Did the Dietary Behavior of Older Korean Adults Change During the COVID-19 Pandemic?
Yong-Seok Kwon, Dasol Kim, Hee-Sook Lim
Nutrients.2025; 17(12): 1973. CrossRef
Intake of energy and macronutrients according to household income among elementary, middle, and high school students before and during the COVID-19 pandemic: a cross-sectional study
Chae-Eun Jeong, Heejin Lee, Jung Eun Lee
Korean Journal of Community Nutrition.2024; 29(3): 234. CrossRef
성인 남녀의 먹방 시청시간에 따른 식행동에 대한 연구
하얀 남, 복미 정, 은례 전
Korean Journal of Food and Cookery Science.2024; 40(4): 275. CrossRef

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[Korean]
Health behaviors and eating habits in people’s 20s and 30s according to food content usage level on social media: a cross-sectional study: Seo-Yeon Bang, Bok-Mi Jung; Korean J Community Nutr 2023;28(5):392-403. Published online October 31, 2023; DOI: https://doi.org/10.5720/kjcn.2023.28.5.392

Abstract PDF

Objectives
This study was intended to investigate adults’ health behaviors and eating habits according to their levels of social media use.
Methods
From May 27 to July 11, 2022, an online survey was conducted of 452 male and female social media users in their 20s and 30s, and their eating habits and health behaviors were compared and analyzed according to their degree of social media use. For each of the three levels of food content use, the frequency of social media content use, and the total score range of average social media viewing time per day were divided into three parts, and a group with a score of less than 2 points was classified as low-use; a group with a score of 2 or more and less than 3 points was classified as middle-use; and a group with a score of 3 points or more was classified as high-use.
Results
The use of food content was higher in women than in men (P < 0.001), and higher in those in their 20s than in those in their 30s (P < 0.001). The group with a high level of food content use showed a higher rate of post-use hunger than the group with a low level (P < 0.01). The experience of eating after using food content was also higher in the group with a high level of use than in the group with a low level of use (P < 0.001). The group with a normal or high level of food content use had more negative eating habits than the group with a low level.
Conclusions
The study highlighted the need to provide desirable food content to people in their 20s and 30s with negative eating habits and to promote them so that they can use the right healthy nutrition–related content.

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The relationship between smartphone usage and eating behavior for elementary school students in Gangneung, South Korea: cross-sectional study
Minji Kim, Meera Jang
Korean Journal of Community Nutrition.2024; 29(4): 278. CrossRef

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[English]
The impact of flash continuous glucose monitoring and nutrition coaching on dietary self-efficacy and weight management in university students in Korea: a pre-post intervention study: Soojin Park; Korean J Community Nutr 2025;30(3):183-196. Published online June 30, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00073

Abstract PDF PubReader ePub: Objectives
This study aimed to evaluate the impact of a 4-week multicomponent intervention combining flash continuous glucose monitoring (flash-CGM), group nutrition education, and personalized nutrition coaching on dietary self-efficacy (DSE) and weight management in healthy university students.
Methods
A total of 27 university students participated in a pre-post intervention study. The intervention included a single 4-hour group-based nutrition education session, flash-CGM usage (FreeStyle Libre; Abbott Diabetes Care), and weekly one-on-one nutrition coaching. Participants wore the CGM device for 28 days (replaced after 14 days), and were guided in using the FoodLens app (DoingLab) for dietary tracking and a mobile app-linked digital scale for weight monitoring. Outcomes measured before and after the intervention included DSE, body mass index (BMI), nutrition quotient (NQ) and glycemic indicators. Statistical analyses included Wilcoxon signed-rank and Mann-Whitney U-tests with significance set at P < 0.05.
Results
There was a significant increase in DSE (P < 0.05), particularly in managing eating behavior under stress and fatigue. A modest but significant decrease in BMI was observed in the overall group (P < 0.05), though changes were not significant in the BMI ≥ 23 kg/m2 subgroup. Glycemic indicators showed minimal changes. The overall NQ score improved slightly, with significant increases in fruit intake (P < 0.01) and nutrition label checks (P < 0.05). High satisfaction levels (4.52 ± 0.65 on a 5‑point scale) were reported for device usability and coaching services.
Conclusion
The multicomponent intervention improved DSE, NQ scores, and supported modest weight reduction among university students. The combined effect of CGM, nutrition education, and coaching appears promising; however, further studies are needed to isolate the effects of each component and evaluate long-term outcomes. Trial Registration: Clinical Research Information Service Identifier: KCT0010255.

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[Korean]
The needs and prioritization of nutrition and dietary support for individuals with disabilities: an exploratory study: Jong Eun Park, Yu Jin Kim, So Young Kim, Jong Hyock Park; Korean J Community Nutr 2024;29(5):431-443. Published online October 31, 2024; DOI: https://doi.org/10.5720/kjcn.2024.00009

Abstract PDF PubReader ePub: Objectives
Based on a survey of officers, social workers, and dietitians involved in managing nutrition and welfare policies or projects for vulnerable groups in local governments or private welfare institutions, this study aimed to assess the need for nutritional and dietary support policies and programs for persons with disabilities (PWD), as well as to identify appropriate support measures. Methods: An online survey was conducted from March 2 to 15, 2021. The survey included 20 questions exploring perspectives on the nutritional status of PWD, their need for nutritional and dietary support policies and programs, and the prioritization of appropriate support measures. A total of 132 responses were analyzed. Results: Approximately 68.9% of the respondents rated the nutritional status of PWD as “bad” or “very bad.” A substantial number identified “difficulty in purchasing ingredients, cooking, and preparing meals independently due to disability,” and “limited knowledge about nutrition and recipes necessary for maintaining a healthy and balanced diet” as the primary challenges in the dietary and nutritional management of this population. Additionally, 97.0% of the respondents deemed that the introduction of nutritional and dietary support policies and programs for PWD was “needed” or “very much needed.” Priority strategies to implement and strengthen these policies and systems included the “development of customized programs and services tailored to the needs and demands of the target population” and the “establishment of a dedicated department with specialized personnel.” Conclusion: Comprehensive nutritional and dietary support policies and programs should be actively implemented to ensure a healthy and stable diet for PWD, tailored to meet their actual needs and demands.

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[English]
Regional differences in protein intake and protein sources of Korean older adults and their association with metabolic syndrome using the 2016–2019 Korea National Health and Nutrition Examination Surveys: a cross-sectional study: You-Sin Lee, Yoonna Lee; Korean J Community Nutr 2024;29(3):173-188. Published online June 30, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.3.173

Abstract PDF PubReader ePub: Objectives
The study aim was to analyze the regional differences in dietary protein intake and protein sources of Korean older adults and their association with metabolic syndrome.
Methods
Study participants were 1,721 older adults aged 65 and over who participated in 2016–2019 Korea National Health and Nutrition Examination Survey. Using 24-hour recall dietary intake data, protein intake and their food sources were examined. The association between protein intake and metabolic syndrome, obesity, and abdominal obesity were analyzed by multiple logistic regression.
Results
Total protein and animal protein intakes were higher in urban area (60.0 g, 24.4 g, respectively) than in rural area (54.6 g, 19.6 g, respectively). With increase of protein intake level, animal to total protein proportion was increased in both areas. Total protein and plant protein intake was negatively associated with the risk of obesity, abdominal obesity in both areas. Animal protein intake was negatively associated with the risk of obesity in both areas, and with abdominal obesity only in urban area. In urban area, plant protein intake was also negatively associated with the risks of metabolic syndrome, elevated triglyceride, and reduced high density lipoprotein-cholesterol. In urban area, the risk of metabolic syndrome was decreased when their protein intake was more than 0.91 g/kg and was lowest when their protein intake was more than 1.5 g/kg (P for trend < 0.001).
Conclusions
Korean older adults showed inadequate protein intake and those in rural area showed lower animal protein intake than in urban area. The risk of obesity and metabolic syndrome was decreased with the increase of protein intake level. These findings may help develop effective nutrition support strategy for older adults to reduce regional health disparity.

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[English]
Relationship between self-care and health-related behaviors among Korean adults: a cross-sectional study: EunJung Lee, Jin A Jang, Ji-Myung Kim; Korean J Community Nutr 2025;30(2):103-113. Published online April 29, 2025; DOI: https://doi.org/10.5720/kjcn.2024.00255

Abstract PDF PubReader ePub: Objectives
This study investigated the relationship between self-care and health-related behaviors such as medication use, dietary supplementation, dietary habits, and physical activity among Koreans aged 20–60 years.
Methods
Data from a total of 300 participants (150 men and 150 women) living in Seoul and Gyeonggi provinces in Korea were analyzed to assess the relationship between health behaviors and dietary supplements (DSs) related to self-care. Based on self-care levels, the participants were classified into three groups: low (LS, n = 124), medium (MS, n = 78), and high (HS, n = 98).
Results
DSs (P < 0.001), physical activity (P < 0.001), recognizing the perceived health benefits of self-care (P < 0.001), self-care when sick (P = 0.039), and the reasons for self-care (P = 0.028) differed among the self-care groups. Daily diet frequency (P = 0.001), breakfast frequency (P = 0.026), regular exercise (P < 0.001), DSs use rate (P < 0.001), DSs use frequency (P = 0.013), and total dietary behavior score (P < 0.001) also differed significantly depending on the degree of self-care. The degree of self-care was significantly and positively correlated with DSs intake (r = 0.377, P < 0.001), physical activity (r = 0.433, P < 0.001), and total dietary behavior score (r = 0.185, P < 0.01).
Conclusion
The results demonstrated that the degree of self-care was related to DSs, physical activity, and total dietary behavior scores in Korean adults. Additionally, self-care capacity should be increased through health-related behaviors based on health education programs.

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[Korean]
Development and application of a dietary program to reduce sugar intake using a living lab approach in Korea: an intervention study: Jung-Hyun Kim, Min Sook Kyung, Seul Ki Choi; Korean J Community Nutr 2024;29(6):504-513. Published online December 31, 2024; DOI: https://doi.org/10.5720/kjcn.2024.00318

Abstract PDF PubReader ePub: Objectives
This study aimed to develop and apply a dietary program to reduce sugar intake among community residents using a Living Lab approach.
Methods
We developed and applied a community-based dietary program to reduce sugar intake. Participants were recruited from community organizations, including a children’s food service management center, elementary to high schools, a university, a family center, a community health center, and an elderly welfare center. The dietary program was conducted in two phases; start and next levels. The start level included a pre-assessment of dietary behaviors and participation in educational platforms, whereas the next level included activities using educational platforms, tailored mission and feedback, and pre- and post-surveys. Extension educators at each community organization implemented the dietary program following organization-specific guidelines. Changes in participants’ nutrition knowledge, dietary behaviors and perceptions, self-efficacy, intention to reduce sugar intake, and participants’ program satisfaction were analyzed using paired t-tests.
Results
In total, 1,238 and 339 individuals participated in the start and next level, respectively. Participants reported significantly lower scores on dietary behavior items regarding drinking more juice or soft drinks after program participation (P = 0.009) and craving sweet foods (P = 0.046). They reported a higher intention to take interest in sugar content in food (P = 0.009) and lower-sugar recipes (P = 0.019), eat less food with high sugar content (P = 0.020), and drink water or sparkling water instead of soft drinks (P = 0.042). Nutrition knowledge did not significantly change after program participation. Program satisfaction significantly increased from the start level to the next level (P<0.050).
Conclusion
This study showed the potential of using a Living Lab approach to implement community-wide dietary interventions. Further research is required to evaluate the effectiveness of the Living Lab approach in various community settings.

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[English]
Development of a campus-based intervention program to strengthen food literacy among university students: A qualitative formative study: Eunji Ko, Eunjin Jang, Jiwon Sim, Minjeong Jeong, Sohyun Park; Korean J Community Nutr 2023;28(6):495-508. Published online December 31, 2023; DOI: https://doi.org/10.5720/kjcn.2023.28.6.495

Abstract PDF

Objectives
This study aimed to develop a campus-based intervention program to enhance food literacy (FL) among university students.
Methods
In the initial phase, we conducted a literature review of FL intervention studies and held in-depth interviews with university students to identify facilitators and barriers to improving and practicing FL. Expert counseling sessions were conducted with nutrition education, marketing, and service design professionals. The results of this phase led to the creation of an initial curriculum draft. In the second phase, a follow-up survey was conducted with young adults to assess the acceptability of the developed curriculum. After the follow-up survey, additional meetings were conducted with the aforementioned experts, and the curriculum was further refined based on their input.
Results
An 11-week FL intervention program was devised using constructs from the Social Cognitive Theory. The weekly curriculum consisted of 90-min theory-based and 90-min hands-on experience sessions. Three primary aspects of FL were covered: nutrition and food safety, cultural and relational dimensions, and socio-ecological aspects. Program highlights included cooking sessions for crafting traditional Korean desserts, lectures on animal welfare, insights into zero-waste practices, and communal eating experiences. Based on the study team’s previous research, the program also addressed mindful eating, helping participants understand the relationship with their eating habits, and providing strategies to manage negative emotions without resorting to food. Yoga sessions and local farm visits were incorporated into the curriculum to promote holistic well-being.
Conclusions
This study elucidated the comprehensive process of creating a campus-based curriculum to enhance FL among university students, a group particularly susceptible to problematic eating behaviors and low FL levels. The developed program can serve as a blueprint for adaptation to other campuses seeking to bolster students’ FL.

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Effects of nutrition class with cooking lab on college students’ eating behaviors and well-being in the United States: a mixed-methods study
Borham Yoon, Kyungyul Jun
Nutrition Research and Practice.2025; 19(2): 305. CrossRef
Evaluating the effectiveness of a food literacy pilot program for university students: using a mixed-methods research approach
Eunji Ko, Eunjin Jang, Jiwon Sim, Minjeong Jeong, Sohyun Park
Nutrition Research and Practice.2024; 18(6): 885. CrossRef
A pilot investigation of a combined food literacy and exercise program for college students: a one-group pre-post intervention study
Minjeong Jeong, Jinhyun Kim, Dahye Han, Eunjin Jang, Kyoungho Choi, Sohyun Park
Korean Journal of Community Nutrition.2024; 29(6): 455. CrossRef

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[Korean]
Biochemical characteristics, nutrient intakes, and chronic disease risk according to the dietary fat energy ratio in middle-aged Korean: a cross-sectional study using data from the 7th (2016–2018) Korean National Health and Nutrition Examination Survey: Ga-Hyeon Jeong, Sook-Bae Kim; Korean J Community Nutr 2024;29(6):528-540. Published online December 31, 2024; DOI: https://doi.org/10.5720/kjcn.2024.00304

Abstract PDF PubReader ePub

Objectives
This study aimed to examine health-related characteristics and chronic disease risk in middle-aged Koreans based on their fat energy intake ratio.
Methods
We analyzed data from 7,274 Koreans aged 40–64 years using the 7th (2016–2018) Koreans National Health and Nutrition Examination Survey. Participants were classified into three groups based on their fat energy intake ratio: insufficient (< 15%), adequate (15%–30%), and excessive (> 30%). We assessed their socio-demographic characteristics; lifestyle characteristics; biochemical characteristics; quantitative and qualitative nutrient intakes, measured using dietary reference intakes for Koreans and index of nutrition quality (INQ); and chronic disease risk.
Results
Significant differences were observed between the groups in age, gender, income, education, and residence region. The insufficient group had the highest proportion of older adults, male, lower income, rural residents, and lower education levels. The groups differed significantly in lifestyle characteristics, with the insufficient group having the highest rates of no walking, heavy drinking, smoking, and poor subjective health perception. Biochemical characteristics in the insufficient group exhibited the lowest levels for fasting blood glucose, hemoglobin A1c, and triglycerides. Significant differences were found in both the quantitative and qualitative intake of nutrients. The insufficient group had the lowest intake of most nutrients except fiber, whereas the excessive group had the lowest fiber intake. Based on the INQ, vitamin A and Ca were the lowest in the insufficient group, and vitamin C and folic acid were the lowest in the excessive group. The risk of diabetes mellitus and metabolic syndrome was highest in the deficient group, and the risk of liver cirrhosis was highest in the excessive group.
Conclusion
Insufficient or excessive fat energy intake ratio negatively affects nutrient intake and chronic disease risk. Fat energy intake of 15%–30% is important for improving nutrient intake and managing chronic diseases, such as diabetes mellitus, metabolic syndrome, and liver cirrhosis. We suggest that education and an appropriate social environment are necessary to ensure this fat energy intake.

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Study on the Optimization of Manufacturing Conditions for Traditional Potato Bugak Using Response Surface Methodology
Yu Hyeon Jo, Jeong Ok Rho
Journal of the East Asian Society of Dietary Life.2025; 35(1): 60. CrossRef
Nutritional risk assessment using estimated usual nutrient intake in Korean adults: analysis of the 8th (2019–2021) Korea National Health and Nutrition Examination Survey data
Woojin Byeon, Cho-il Kim, Sung Ok Kwon, Jihyun Yoon, Linxi Huang
Nutrition Research and Practice.2025; 19(5): 799. CrossRef

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[English]
Effects of a nutrition education program on metabolic syndrome risk factors in middle-aged Korean adults: an intervention study: Minji Kang, Young-Hee Park, Subeen Kim, Eunyoung Tak, Hyun Wook Baik, Hee Young Paik, Hyojee Joung; Korean J Community Nutr 2024;29(4):265-277. Published online August 31, 2024; DOI: https://doi.org/10.5720/kjcn.2024.00005

Abstract PDF PubReader ePub: Objectives
This study was conducted to evaluate the effects of a nutrition education program on metabolic syndrome in middle-aged Korean adults.
Methods
A total of 411 Korean adults 30–59 years of age were allocated randomly into three groups: the nutrition education group for promoting Han-sik consumption (HG), the nutrition education group for eating balanced diet (EG), and the control group (CG). The HG and EG received four face-to-face nutrition education sessions over 16 weeks to improve nutritional problems based on the individual’ usual diet. Effectiveness of the program was evaluated with the differences of self-reported dietary behaviors, dietary intakes, anthropometric measurements and biochemical indices between the baseline and the end of the nutrition education program. The changes within groups were analyzed using paired t-test and McNemar test and effectiveness among three groups was analyzed by repeated analysis of variance.
Results
After the nutrition education, the percentages of participants who achieved the recommended food group consumption in the Korean Food Guidance Systems significantly increased in HG (P = 0.022). Body weight (P = 0.007), body mass index (P = 0.002), and triglycerides (P = 0.002) significantly decreased in HG. Waist circumference and diastolic blood pressure decreased in all three groups (P < 0.05).
Conclusions
This study found that tailored nutrition education program for middle aged Korean adults showed beneficial effects on improving dietary behaviors and metabolic syndrome risk factors. Further studies are needed to assess the long-term effects of the nutrition education programs on metabolic syndrome risks.

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[Korean]
Association of ultra-processed food with diabetes and impaired fasting glucose in elderly populations (urban and rural): a cross-sectional study: Seung Jae Lee, Mi Sook Cho; Korean J Community Nutr 2024;29(1):51-64. Published online February 29, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.1.51

Abstract PDF

Objectives
This study examined the association between ultra-processed food (UPF) consumption and chronic diseases in elderly Koreans.
Methods
Data from the 2019–2021 Korea National Health and Nutrition Examination Survey were analyzed. Dietary intake and UPF consumption were assessed using the NOVA food classification based on 24-hour recall data from 3,790 participants (aged 65+ years). Participants were divided into 4 groups based on the quartile of energy intake from UPFs. Regions were classified as urban or rural. Multivariable logistic regression was employed to estimate the adjusted odds ratios (AORs) with 95% confidence intervals (CIs) after controlling for potential confounders.
Results
Among the participants, 71.3% resided in urban and 28.7% in rural areas. Compared to the urban elderly, rural participants tended to be older, have lower education and income levels, be more likely to live in single-person households, and have a higher smoking rate (P < 0.05). Urban elderly consumed more UPFs daily (146.1 g) compared to rural residents (126.6 g; P < 0.05). “Sugar-sweetened beverages” were the most consumed category in both regions. “Sweetened milk and its products” and “traditional sauces” were prominent in urban areas, while rural elderly consumed more “traditional sauces” and “distilled alcoholic beverages.” Rural areas also had a higher carbohydrate-to-calorie ratio than urban areas. Compared to the lowest quartile of UPF intake, the highest quartile was significantly associated with impaired fasting glucose only in rural areas (AOR, 1.48; 95% CI, 1.00–2.19; P for trend = 0.0014). No significant associations were observed for diabetes in either urban or rural areas.
Conclusions
This study suggests that high intake of UPFs is associated with increased odds of impaired fasting glucose in rural elderly. Further research is needed to elucidate the specific negative health effects of UPFs in different populations, and targeted efforts should promote healthy diets in both urban and rural areas.

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