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BMC Psychiatry
Published in: BMC Psychiatry 1/2017

Open Access 01-12-2017 | Research article

Association of body mass index with amnestic and non-amnestic mild cognitive impairment risk in elderly

Authors: Feng Wang, Minghui Zhao, Zhaoli Han, Dai Li, Shishuang Zhang, Yongqiang Zhang, Xiaodong Kong, Ning Sun, Qiang Zhang, Ping Lei

Published in: BMC Psychiatry | Issue 1/2017

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Abstract

Background

Previous studies focused on the relationship between body mass index and cognitive disorder and obtained many conflicting results. This study explored the potential effects of body mass index on the risk of mild cognitive impairment (amnestic and non-amnestic) in the elderly.

Methods

The study enrolled 240 amnestic mild cognitive impairment patients, 240 non-amnestic mild cognitive impairment patients and 480 normal cognitive function controls. Data on admission and retrospective data at baseline (6 years ago) were collected from their medical records. Cognitive function was evaluated using Mini-Mental State Examination and Montreal Cognitive Assessment.

Results

Being underweight, overweight or obese at baseline was associated with an increased risk of amnestic mild cognitive impairment (OR: 2.30, 95%CI: 1.50 ~ 3.52; OR: 1.74, 95%CI: 1.36 ~ 2.20; OR: 1.71, 95%CI: 1.32 ~ 2.22, respectively). Being overweight or obese at baseline was also associated with an increased risk of non-amnestic mild cognitive impairment (OR: 1.51, 95%CI: 1.20 ~ 1.92; OR: 1.52, 95%CI: 1.21 ~ 1.97, respectively). In subjects with normal weights at baseline, an increased or decreased body mass index at follow-up was associated with an elevated risk of amnestic mild cognitive impairment (OR: 1.80, 95%CI: 1.10 ~ 3.05; OR: 3.96, 95%CI: 2.88 ~ 5.49, respectively), but only an increased body mass index was associated with an elevated risk of non-amnestic mild cognitive impairment (OR: 1.71, 95%CI: 1.16 ~ 2.59).

Conclusions

Unhealthy body mass index levels at baseline and follow-up might impact the risk of both types of mild cognitive impairment (amnestic and non-amnestic).
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Metadata
Title
Association of body mass index with amnestic and non-amnestic mild cognitive impairment risk in elderly
Authors
Feng Wang
Minghui Zhao
Zhaoli Han
Dai Li
Shishuang Zhang
Yongqiang Zhang
Xiaodong Kong
Ning Sun
Qiang Zhang
Ping Lei
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2017
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/s12888-017-1493-x

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