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Underweight and mortality

Authors
 Joo Young Lee  ;  Hyeon Chang Kim  ;  Changsoo Kim  ;  Keeho Park  ;  Song Vogue Ahn  ;  Dae Ryong Kang  ;  Kay-Tee Khaw  ;  Walter C Willett  ;  Il Suh 
Citation
 Public Health Nutrition, Vol.19(10) : 1751-1756, 2016 
Journal Title
 Public Health Nutrition 
ISSN
 1368-9800 
Issue Date
2016
MeSH
Adult ; Body Mass Index ; Female ; Humans ; Male ; Middle Aged ; Prospective Studies ; Republic of Korea/epidemiology ; Smoking ; Thinness/mortality*
Keywords
Korea ; Mortality ; Obesity ; Smoking ; Thinness
Abstract
OBJECTIVE: According to most prospective studies, being underweight (BMI<18·5 kg/m2) is associated with significantly higher mortality than being of normal weight, especially among smokers. We aimed to explore in a generally lean population whether being underweight is significantly associated with increased all-cause mortality. DESIGN: Prospective cohort study. SETTING: Korea Medical Insurance Corporation study with 14 years of follow-up. SUBJECTS: After excluding deaths within the first 5 years of follow-up (1993-1997) to minimize reverse causation and excluding participants without information about smoking and health status, 94 133 men and 48 496 women aged 35-59 years in 1990 were included. RESULTS: We documented 5411 (5·7 %) deaths in men and 762 (1·6 %) in women. Among never smokers, hazard ratios (HR) for underweight individuals were not significantly higher than those for normal-weight individuals (BMI=18·5-22·9 kg/m2): HR=0·87 (95 % CI 0·41, 1·84, P=0·72) for underweight men and HR=1·12 (95 % CI 0·76, 1·65, P=0·58) for underweight women. Among ex-smokers, HR=0·86 (95 % CI 0·38, 1·93, P=0·72) for underweight men and HR=3·77 (95 % CI 0·42, 32·29, P=0·24) for underweight women. Among current smokers, HR=1·60 (95 % CI 1·28, 2·01, P<0·001) for underweight men and HR=2·07 (95 % CI 0·43, 9·94, P=0·36) for underweight women. CONCLUSIONS: The present study does not support that being underweight per se is associated with increased all-cause mortality in Korean men and women.
Full Text
https://www.cambridge.org/core/journals/public-health-nutrition/article/underweight-and-mortality/C12C2E65EB2C60F1BF671A31025C0EB5
DOI
10.1017/S136898001500302X
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 1. Journal Papers
Yonsei Authors
김창수(Kim, Chang Soo) ORCID logo https://orcid.org/0000-0002-5940-5649
김현창(Kim, Hyeon Chang) ORCID logo https://orcid.org/0000-0001-7867-1240
서일(Suh, Il) ORCID logo https://orcid.org/0000-0002-9689-7849
이주영(Lee, Joo Young)
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/147144
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