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Body Mass Index and Mortality Rate in Korean Patients with Alzheimer's Disease.

Authors
Jang, H | Kim, JH | Choi, SH | Lee, Y  | Hong, CH  | Jeong, JH | Han, HJ | Moon, SY  | Park, KW | Han, SH | Park, KH | Kim, HJ | Na, DL | Seo, SW
Citation
Journal of Alzheimer's disease : JAD, 46(2). : 399-406, 2015
Journal Title
Journal of Alzheimer's disease : JAD
ISSN
1387-28771875-8908
Abstract
BACKGROUND: A relationship between body weight, cognitive impairment, and the onset of Alzheimer's disease (AD) was recently reported. However, to our knowledge, no studies have investigated the relationship between body weight and mortality in Asian AD patients.

OBJECTIVE: We evaluated the relationship between body mass index (BMI) and mortality rate in Korean AD cohorts.

METHODS: Participants were consecutively included from two Korean representative registries: 579 AD patients from Samsung Medical Center and 1911 AD patients from the Clinical Research Center for Dementia of South Korea study. We combined these two AD cohorts to evaluate the association between BMI and mortality. BMI was used to categorize the participants into underweight, normal-weight, overweight, and obesity subgroups. All deaths were confirmed through the nationwide mortality database of Statistics Korea.

RESULTS: 53 of 181 (29.3%), 208 of 1,127 (18.5%), 88 of 626 (14.1%), and 115 of 556 (20.7%) patients died in the underweight, normal-weight, overweight, and obese subgroups during 43.7 months of follow-up. The time-dependent cox proportional hazards model showed that, relative to the normal-weight subgroup, the underweight group had higher mortality (HR 1.82 (95% CI, 1.07-3.09)) while overweight group had lower mortality rate (HR 0.60 (95% CI, 0.38-0.95)) The effects of underweight and overweight were prominent in younger and older elderly group, respectively. However, there were no interactive effects of dementia severity or gender and BMI on survival rate.

CONCLUSION: Relative to AD patients of normal weight, those who were underweight had an increased mortality rate, and overweight predicted decreased mortality in AD patients. Furthermore, our findings may help facilitate mortality stratification in AD patients by using baseline BMI.
MeSH

DOI
10.3233/JAD-142790
PMID
25737040
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Preventive Medicine & Public Health
Journal Papers > School of Medicine / Graduate School of Medicine > Psychiatry & Behavioural Sciences
Journal Papers > School of Medicine / Graduate School of Medicine > Neurology
Ajou Authors
문, 소영  |  이, 윤환  |  홍, 창형
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