1.Consumption of ultra-processed foods and major contributing foods according to the age group in Korean adults and older adults: using data from the Korean National Health and Nutrition Examination Survey (2016–2019)
Seulgi LEE ; Jee Young KIM ; Kirang KIM
Journal of Nutrition and Health 2025;58(1):59-76
Purpose:
Ultra-processed foods (UPFs) play a significant role in modern diets but are associated with various health risks, including obesity, cardiovascular disease, and diabetes.This study examined the consumption patterns of UPFs among middle-aged adults, older adults, and the oldest older adults in South Korea to identify the key food sources contributing to UPF intake using the Korean NOVA classification system.
Methods:
Data from the 2016–2019 Korea National Health and Nutrition Examination Survey were analyzed for 13,396 participants aged 40 years and older. Individuals with extreme energy intakes, serious diseases, or incomplete dietary records were excluded. The UPF intake levels were categorized into quartiles (Q1–Q4) based on the proportion of energy derived from UPFs, excluding individuals who did not consume UPFs.
Results:
In all age groups, the group with a high proportion of UPF consumption tended to have higher energy and macronutrient intake but lower micronutrient intake. The UPFs contributing significantly to energy intake were primarily alcohol and grain-based products.On the other hand, the energy contribution from UPFs based on legumes, milk, and dairy products tended to increase as the level of UPF consumption increased, and this trend was more significant with increasing age.
Conclusion
This study identified the differences in UPF consumption patterns across age groups and highlighted the importance of selective consumption based on the types of UPFs.
2.Consumption of ultra-processed foods and major contributing foods according to the age group in Korean adults and older adults: using data from the Korean National Health and Nutrition Examination Survey (2016–2019)
Seulgi LEE ; Jee Young KIM ; Kirang KIM
Journal of Nutrition and Health 2025;58(1):59-76
Purpose:
Ultra-processed foods (UPFs) play a significant role in modern diets but are associated with various health risks, including obesity, cardiovascular disease, and diabetes.This study examined the consumption patterns of UPFs among middle-aged adults, older adults, and the oldest older adults in South Korea to identify the key food sources contributing to UPF intake using the Korean NOVA classification system.
Methods:
Data from the 2016–2019 Korea National Health and Nutrition Examination Survey were analyzed for 13,396 participants aged 40 years and older. Individuals with extreme energy intakes, serious diseases, or incomplete dietary records were excluded. The UPF intake levels were categorized into quartiles (Q1–Q4) based on the proportion of energy derived from UPFs, excluding individuals who did not consume UPFs.
Results:
In all age groups, the group with a high proportion of UPF consumption tended to have higher energy and macronutrient intake but lower micronutrient intake. The UPFs contributing significantly to energy intake were primarily alcohol and grain-based products.On the other hand, the energy contribution from UPFs based on legumes, milk, and dairy products tended to increase as the level of UPF consumption increased, and this trend was more significant with increasing age.
Conclusion
This study identified the differences in UPF consumption patterns across age groups and highlighted the importance of selective consumption based on the types of UPFs.
3.Consumption of ultra-processed foods and major contributing foods according to the age group in Korean adults and older adults: using data from the Korean National Health and Nutrition Examination Survey (2016–2019)
Seulgi LEE ; Jee Young KIM ; Kirang KIM
Journal of Nutrition and Health 2025;58(1):59-76
Purpose:
Ultra-processed foods (UPFs) play a significant role in modern diets but are associated with various health risks, including obesity, cardiovascular disease, and diabetes.This study examined the consumption patterns of UPFs among middle-aged adults, older adults, and the oldest older adults in South Korea to identify the key food sources contributing to UPF intake using the Korean NOVA classification system.
Methods:
Data from the 2016–2019 Korea National Health and Nutrition Examination Survey were analyzed for 13,396 participants aged 40 years and older. Individuals with extreme energy intakes, serious diseases, or incomplete dietary records were excluded. The UPF intake levels were categorized into quartiles (Q1–Q4) based on the proportion of energy derived from UPFs, excluding individuals who did not consume UPFs.
Results:
In all age groups, the group with a high proportion of UPF consumption tended to have higher energy and macronutrient intake but lower micronutrient intake. The UPFs contributing significantly to energy intake were primarily alcohol and grain-based products.On the other hand, the energy contribution from UPFs based on legumes, milk, and dairy products tended to increase as the level of UPF consumption increased, and this trend was more significant with increasing age.
Conclusion
This study identified the differences in UPF consumption patterns across age groups and highlighted the importance of selective consumption based on the types of UPFs.
5.Aptamin C enhances anti-cancer activity NK cells through the activation of STAT3:a comparative study with vitamin C
Tomoyo AGURA ; Seulgi SHIN ; Hyejung JO ; Seoyoun JEONG ; Hyovin AHN ; So Young PANG ; June LEE ; Jeong-Ho PARK ; Yejin KIM ; Jae Seung KANG
Anatomy & Cell Biology 2024;57(3):408-418
Vitamin C is a well-known antioxidant with antiviral, anticancer, and anti-inflammatory properties based on its antioxidative function. Aptamin C, a complex of vitamin C with its specific aptamer, has been reported to maintain or even enhance the efficacy of vitamin C while increasing its stability. To investigate in vivo distribution of Aptamin C, Gulo knockout mice, which, like humans, cannot biosynthesize vitamin C, were administered Aptamin C orally for 2 and 4 weeks.The results showed higher vitamin C accumulation in all tissues when administered Aptamin C, especially in the spleen. Next, the activity of natural killer (NK) cells were conducted. CD69, a marker known for activating for NK cells, which had decreased due to vitamin C deficiency, did not recover with vitamin C treatment but showed an increasing with Aptamin C. Furthermore, the expression of CD107a, a cell surface marker that increases during the killing process of target cells, also did not recover with vitamin C but increased with Aptamin C. Based on these results, when cultured with tumor cells to measure the extent of tumor cell death, an increase in tumor cell death was observed. To investigate the signaling mechanisms and related molecules involved in the proliferation and activation of NK cells by Aptamin C showed that Aptamin C treatment led to an increase in intracellular STAT3 activation. In conclusion, Aptamin C has a higher capability to activate NK cells and induce tumor cell death compared to vitamin C and it is mediated through the activation of STAT3.
6.The Effect of A2 Milk on Gastrointestinal Symptoms in Comparison to A1/A2 Milk: A Single-center, Randomized, Double-blind, Cross-over Study
Yonghoon CHOI ; Nayoung KIM ; Chin-Hee SONG ; Seulgi KIM ; Dong Ho LEE
Journal of Cancer Prevention 2024;29(2):45-53
β-Casein, a major protein in cow’s milk, is divided into the A1 and A2 type variants. Digestion of A1 β-casein yields the peptide β-casomorphin-7 which could cause gastrointestinal (GI) discomfort but A2 milk containing only A2 β-casein might be more beneficial than A1/A2 (regular) milk. The aim of this study was to evaluate the differences in GI discomfort after ingestion of A2 milk and A1/A2 milk. A randomized, double-blind, cross-over human trial was performed with 40 subjects who experienced GI discomfortfollowing milk consumption. For each intervention period, either A2 milk first (A2→A1/A2) or A1/A2 milk was first consumed for 2 weeks (A1/A2→A2) following a 2-week washout period. GI symptom rating scale (GSRS) scores, questionnaire for digestive symp-toms, and laboratory tests including fecal calprotectin were evaluated. For symptom analysis, generalized estimating equations gamma model was used. A2 milk increased bloating (P = 0.041) and loose stools (P = 0.026) compared to A1/A2 milk in GSRS. However, A2 milk caused less abdominal pain (P = 0.050), fecal urgency (P < 0.001) and borborygmus (P = 0.007) compared to A1/A2 milk in questionnaire for digestive symptoms. In addition, fecal calprotectin also decreased or less increased after consumption of A2 milk compared to A1/A2 milk (P = 0.030), and this change was more pronounced in males (P = 0.005) than in females.There were no significant adverse reactions during the trial. A2 milk alleviated digestive discomfort in Koreans following A2 milk consumption (ClinicalTrials.gov NCT06252636 and CRIS KCT0009301).
7.Dural Arteriovenous Fistula Manifested as Transient Global Amnesia
Seulgi CHOI ; Soo Ji YOON ; Soo Im JANG ; Saenal LEE ; Ji Yoon ANN ; Eun Ja LEE ; Sung-Ho WOO ; Kwang Ki KIM ; Hang-Rai KIM
Journal of the Korean Neurological Association 2024;42(2):179-182
Unruptured dural arteriovenous fistula (dAVF) manifests various symptoms including exophthalmos, headache, tinnitus, and retro-orbital pain. Transient global amnesia (TGA) is a clinical syndrome of reversible anterograde amnesia. Here, we report a 62-year-old woman with dAVF, manifested as TGA. This case emphasized that the clinicians should stay vigilance to the organic cause of TGA, especially in those complaining other symptoms besides amnesia such as pulsatile tinnitus and headache. Furthermore, our case supports a hypothetical patho-mechanism of venous congestion for TGA.
8.Expression and Role of Calcitonin Gene-Related Peptide in Patients With Chronic Rhinosinusitis With Nasal Polyposis
Jaein CHUNG ; Seulgi LEE ; Min Gyu KIM ; Se Yeon IM ; Seung Hyeon CHOI ; Soo Kyoung PARK ; Ki-Sang RHA ; Yong Min KIM
Korean Journal of Otolaryngology - Head and Neck Surgery 2024;67(3):190-190
9.Atypical loculated pericardial effusion with infectious pericarditis mimicking a cardiac mass in a dog: a case report
Ji-Yun LEE ; Seulgi BAE ; Jin-Kyu PARK ; Min JANG ; Kija LEE ; Sang-Kwon LEE
Korean Journal of Veterinary Research 2024;64(2):e15-
A 13-year-old, Maltese dog presented with syncope and lethargy. Abdominal ultrasonography demonstrated anechoic peritoneal effusion and hepatic congestion. A focal echogenic round mass compressing the right ventricle and atrium was observed on echocardiography. Cardiac tamponade and right ventricular outflow tract obstruction occurred. On computed tomography, a homogeneous soft-tissue structure compressing the right chamber without contrast enhancement, suspected to be loculated pericardial effusion. During pericardiocentesis, cardiac tamponade was resolved, and irregular pericardial thickening was noted. Pericardial effusion was exudate and gram-positive bacterial colonies were observed on cytology. A diagnosis of fibrinous pericarditis secondary to bacterial infection was established.
10.Food literacy and its relationship with food intake: a comparison between adults and older adults using 2021 Seoul Food Survey data
Seulgi LEE ; Sohyun PARK ; Kirang KIM
Epidemiology and Health 2023;45(1):e2023062-
OBJECTIVES:
This study was conducted to examine the differences in food literacy between adults and older adults and the association of food literacy with food group intake.
METHODS:
In total, 4,039 participants from the 2021 Survey for Food Consumption in Seoul were included in this study. The intake of whole grains, high-protein foods, total vegetables, vegetables excluding kimchi and pickles, fresh fruits, and milk and dairy products was assessed using a simple food frequency questionnaire. Food literacy was measured using a food literacy measurement questionnaire.
RESULTS:
With the exception of milk and dairy, adults had a significantly higher proportion of insufficient food intake than older adults (p<0.001). Both adults and older adults with sufficient food group consumption had higher food literacy scores. Notably, the difference in food literacy scores by level of food intake was highest for fresh fruits (p<0.001). After adjusting for confounding factors affecting food literacy scores, a higher score was associated with a lower probability of having insufficient food intake in all food groups for both adults and older adults. Specifically, those in the highest food literacy score quartile were less likely to have insufficient intake of vegetables (odds ratio [OR], 0.35; 95% confidence interval [CI], 0.28 to 0.43) and fresh fruits (OR, 0.32; 95% CI, 0.24 to 0.43), compared to the lowest quartile.
CONCLUSIONS
Improving food literacy is an important factor for promoting healthy food intake in older adults as well as adults. Therefore, it is necessary to develop intervention programs to work toward this goal.

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