Publication Type
Journal Article
Version
publishedVersion
Publication Date
10-2019
Abstract
The links between obesity and cognition remain equivocal due to a variety of methodological limitations with current research, such as an overreliance on body mass index (BMI) as a measure of obesity, the use of cross-sectional designs, and inadequate specification over the domains of cognitive function to be examined. To address these issues, we used data from the Cognitive Project of the National Survey of Midlife Development in the United States, a large-scale, longitudinal dataset on non-institutionalized midlife adults (N = 2652), which enabled us to examine the long-term bidirectional relations between obesity and two latent factors of cognition—executive function and episodic memory—while controlling for potential confounds. Results showed that, over a span of nine years, an increase in obesity in Time 1 is associated with a decline in episodic memory in Time 2 (but not executive function), while an increase in executive function in Time 1 (but not episodic memory) is associated with a reduction in obesity in Time 2. These results were elucidated when obesity was indexed with waist-to-hip ratio but not with BMI. Our findings highlight important directions for further research, in particular the use of more valid obesity indices and a greater focus on the bidirectional effects between obesity and cognition. View Full-Text
Keywords
obesity, body mass index, waist-to-hip ratio, executive function, episodic memory
Discipline
Biological Psychology
Research Areas
Psychology
Publication
Nutrients
Volume
11
Issue
10
First Page
2343: 1
Last Page
13
ISSN
2072-6643
Identifier
10.3390/nu11102343
Publisher
MDPI
Citation
HARTANTO, Andree, YONG, Jose C., & TOH, Wei Xing.(2019). Bidirectional associations between obesity and cognitive function in midlife adults: A longitudinal study. Nutrients, 11(10), 2343: 1-13.
Available at: https://ink.library.smu.edu.sg/soss_research/3086
Copyright Owner and License
Authors
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Additional URL
https://doi.org/10.3390/nu11102343