byoungduck han
clinical assistant professor
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About
Byoungduck Han is a Clinical Assistant Professor at Korea University Guro Hospital in South Korea. His research focuses on the relationship between body composition, metabolic health, and chronic diseases, as evidenced by his recent publications on topics such as end-stage renal disease, obesity trends, and cardiovascular risks associated with menopause. He has contributed to the understanding of health indicators and their implications for quality of life in various populations.
Articles (15)
Year:
2025
Year:
2024
Year:
2024
Year:
2023
Background and Objectives: Hand grip strength (HGS) and osteoporosis are known to be closely related to the health condition of the elderly, respectively. Comprehensive studies including adults over middle age were insufficient. This study aimed to investigate the relationship between HGS with osteoporosis and health-related quality of life (HRQoL) in adults aged >40 years. Materials and Methods: This cross-sectional analysis included data from 13,966 people aged >40 years between 2015 to 2018 provided by the Korea National Health and Nutrition Examination Survey. The HGS was divided into strong and weak quartiles, defined as the highest and lowest quartiles, respectively. We used the European Quality of Life Scale-Five dimensions (EQ-5D) for HRQoL. We performed multiple logistic regression and post hoc analysis to confirm the relationship between the four groups and HRQoL. Results: Osteoporotic patients with weak HGS showed the lowest EQ-5D index (0.87 ± 0.01) among all groups and had a significantly impaired HRQoL in all EQ-5D dimensions, at least 1.75 times more than healthy individuals with strong HGS (0.95 ± 0.00). Osteoporotic patients with weak HGS showed, notably, 2.68 times more impaired mobility compared to healthy individuals with strong HGS among all five dimensions of the EQ-5D. In self-care, significant sex differences in impaired HRQoL were observed (males 6.03, 2.23–16.35; females 2.51, 1.70–3.71). Conclusions: Weak HGS and the presence of osteoporosis were associated with low HRQoL, respectively. Middle-aged and older adults with both weak HGS and osteoporosis showed poorer HRQoL compared to healthy middle-aged and older adults. This suggests that HGS is a possible factor for predicting poor HRQoL in adults aged >40 years with or without osteoporosis. It is necessary to assess the risk of low HRQoL by measuring HGS and confirming whether osteoporosis is accompanied in adults over middle age.
Year:
2023
Background Mortality from cardiovascular diseases in Asian populations is considerable. Menopause is a risk‐enhancing factor for cardiovascular disease, but it is unclear whether menopause is an independent risk factor for cardiovascular disease and mortality in Asian women. Methods and Results A total of 1 159 405 postmenopausal women, who had participated in the health examinations of the Korean National Health Insurance Service in 2009, were analyzed, and their reproductive histories were taken. A multivariable Cox proportional hazard model assessed the hazard ratios (HRs) of myocardial infarction (MI), ischemic stroke, and all‐cause mortality, according to the history of premature menopause and age at menopause. After an average 10‐year follow‐up, there were 31 606, 45 052, and 77 680 new cases of MI, ischemic stroke, and all‐cause mortality, respectively. The women with premature menopause exhibited increased risks of MI (HR, 1.40 [95% CI, 1.31–1.50]), ischemic stroke (HR, 1.24 [95% CI, 1.17–1.31]), and all‐cause mortality (HR, 1.19 [95% CI, 1.14–1.24]) when compared with women with menopause aged ≥50 years. The highest risk was evident with menopause between the ages of 30 and 34 years (HR for MI, 1.52 [95% CI, 1.30–1.78]; HR for ischemic stroke, 1.29 [95% CI, 1.12–1.48]; HR for all‐cause mortality, 1.33 [95% CI, 1.20–1.47]) when compared with women with menopause aged ≥50 years. Conclusions Earlier age at menopause was associated with increased risks for MI, ischemic stroke, and all‐cause mortality. Future guidelines and risk assessment tools should consider menopause as an independent risk factor of cardiovascular disease in Korean women.
Year:
2023
Year:
2023
Year:
2023
Year:
2022
Year:
2022
Year:
2021
Year:
2021
Year:
2021
Year:
2020
Year:
2020
Collaborators (12)
Jihyun Yoon
Clinical assistant professor (E)
Seoul National University Hospital
Youn Seon Choi
Professor
Seoul National University Hospital
Gyu Lee
Yeungnam University Medical Center
Minsung SOHN
-
Ga Eun Nam
-
Yong Gyu Park
Professor
Catholic University of Korea School of Medicine
Sun Young Yim
Associate professor
Seoul National University Hospital
Jang Won Son
Associate professor
The Catholic University of Korea
Seok Kang
Seoul National University Hospital
Joung Sik Son
Seoul National University Hospital
Donghyun Kim
Associate Professor
Seoul National University College of Medicine
Yang‐Hyun Kim
-
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