Body mass index and trajectories of cognitive decline among older Korean adults

Kim, Giyeon; Choi, Sunha; Lyu, Jiyoung

doi:10.1080/13607863.2018.1550628

Cited by 32 publications

(39 citation statements)

References 43 publications

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“…This is also consistent with a Chinese study that used the CLHLS sample (Zhang et al, 2017). Unlike studies indicating that obesity is associated with increased (Feinkohl et al, 2018) or decreased (Kim et al, 2019) risk of cognitive impairment, our results do not exhibit an association between a high BMI and cognition. Several aspects might explain this.…”

Section: Discussioncontrasting

confidence: 99%

“…Except for the age, gender and education variables mentioned above, other factors were also associated with trajectory membership, such as BMI. There are ongoing discussions about the relationship between body weight and cognitive function (Dahl et al, 2013;Feinkohl et al, 2018;Kim et al, 2019). In accordance with the previous studies conducted among other populations (Kim et al, 2019;Sabia et al, 2009), which reported that being underweight was a risk factor for cognitive decline, our results also suggested that being underweight plays a role in differentiating group membership, with an OR of 1.70 for rapid decline compared with the stable group.…”

Section: Discussionsupporting

confidence: 91%

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Trajectories of cognitive function and their determinants in older people: 12 years of follow-up in the Chinese Longitudinal Healthy Longevity Survey

Yuan

et al. 2020

Int. Psychogeriatr.

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ABSTRACTBackground:Cognitive decline in advanced age is closely related to dementia. The trajectory of cognitive function in older Chinese is yet to be fully investigated. We aimed to investigate the trajectories of cognitive function in a nationally representative sample of older people living in China and to explore the potential determinants of these trajectories.Methods:This study included 2,038 cognitively healthy persons aged 65–104 years at their first observation in the Chinese Longitudinal Healthy Longevity Survey from 2002 to 2014. Cognitive function was measured using the Chinese version of the Mini-Mental State Examination (MMSE). Group-based trajectory modeling was used to identify potential heterogeneity of longitudinal changes over the 12 years and to investigate associations between baseline predictors of group membership and these trajectories.Results:Three trajectories were identified according to the following types of changes in MMSE scores: slow decline (14.0%), rapid decline (4.5%), and stable function (81.5%). Older age, female gender, having no schooling, a low frequency of leisure activity, and a low baseline MMSE score were associated with the slow decline trajectory. Older age, body mass index (BMI) less than 18.5 kg/m2, and having more than one cardiovascular disease (CVD) were associated with the rapid decline trajectory.Conclusion:Three trajectories of cognitive function were identified in the older Chinese population. The identified determinants of these trajectories could be targeted for developing prevention and intervention strategies for dementia.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionsupporting

confidence: 91%

Trajectories of cognitive function and their determinants in older people: 12 years of follow-up in the Chinese Longitudinal Healthy Longevity Survey

Yuan

et al. 2020

Int. Psychogeriatr.

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“…Kim G. et al have studied some of these associations longitudinally, reporting that those who were underweight exhibited faster deterioration in cognitive functioning, compared to those with a normal weight. However, overweight or obese older adults presented a slower cognitive decline than those with normal weight [29]. As shown in Fig.…”

Section: Discussionmentioning

confidence: 84%

Body mass index, performance on activities of daily living and cognition: analysis in two different populations

et al. 2021

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Background With this study, we aim to determine the associations of the different categories of the body mass index (BMI) with activities of daily living (ADL) and cognitive performance in two different populations living in the community; Colombian and South Korean older adults. Methods We performed a cross-sectional analysis of two surveys separately; The Survey on Health, Well-Being, and Aging in Colombia (SABE) (n = 23,343) and the Korean Longitudinal Study of aging (KLoSA) (n = 4556). Participants older than 50 years were selected from rural and urban areas achieving a representative sample. Here we investigated the association between BMI categories with function using zero-inflated negative binomial regressions, and with cognition using logistic regression models. Results After adjustment, in Colombia, underweight was associated with an impaired score on the Mini-mental State Examination (MMSE) and worse performance in the instrumental activities of daily living (IADL). Also, being overweight was associated with a better score on the MMSE and the IADL. For both outcomes education level significantly influenced the predictions. In South Korea, there were no significant associations for cognition, IADL, or basic activities of daily living (BADL). Conclusions In the Colombian population, underweight, was associated with reduced cognitive performance and daily functioning. Additionally, being overweight but not obese was associated with better cognition and daily functioning. In South Korea, there were no significant associations between BMI and cognition, IADL, or BADL.

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“…Interestingly, obesity leads to more detrimental health effects in midlife than in old age. This has led some to refer to an “obesity paradox,” 4 where there is an apparent “protective” effect of high adiposity for health, including cognitive decline, in late life 5‐8 . Obesity is most often measured by body mass index (BMI), and several studies have demonstrated being overweight (BMI = 25–29 kg/m 2 ) or obese (BMI ≥ 30 kg/m 2 ) in midlife is related to faster cognitive decline 9,10 compared with overweight/obese in late life, which shows an inconsistent association with cognition.…”

Section: Introductionmentioning

confidence: 99%

Changes in Body Mass Index Are Related to Faster Cognitive Decline Among African American Older Adults

Aiken‐Morgan

Capuano

Arvanitakis

et al. 2020

J American Geriatrics Society

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BACKGROUND/OBJECTIVES: The purpose of this study was to: (1) examine relationships between body mass index (BMI) stability and cognitive decline in older African Americans; and (2) investigate differences in the relationships between women and men. DESIGN: The present study is a secondary data analysis of the Minority Aging Research Study, which is a longitudinal, cohort study of risk factors for cognitive decline and Alzheimerʼs disease among older African Americans living in the Chicago, IL, area. The study entails annual clinical evaluations, including measures of 19 neuropsychological tests that represent five cognitive domains, including episodic, semantic, and working memory, perceptual speed, and visuospatial ability. PARTICIPANTS: Participants (n = 671; mean age = 73.5 years; standard deviation = 6.2 years) were included in the present analysis if they were dementia free at baseline and completed at least two clinical evaluations, on average 1 year apart, that included valid cognitive and BMI assessments. RESULTS: Mixed-effects models showed higher baseline BMI was related to slower global cognitive decline, whereas changes in BMI (instability) were related to faster global cognitive decline. These effects were the same for four of five cognitive domains and remained after controlling for various health characteristics. However, women and men did not differ in any of the relationships. CONCLUSION: Higher BMI is related to slower cognitive decline in older African Americans, but greater BMI instability is related to faster decline. Stability of BMI should be considered in the cognitive aging of African Americans.

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Body mass index and trajectories of cognitive decline among older Korean adults

Cited by 32 publications

References 43 publications

Trajectories of cognitive function and their determinants in older people: 12 years of follow-up in the Chinese Longitudinal Healthy Longevity Survey

Trajectories of cognitive function and their determinants in older people: 12 years of follow-up in the Chinese Longitudinal Healthy Longevity Survey

Body mass index, performance on activities of daily living and cognition: analysis in two different populations

Changes in Body Mass Index Are Related to Faster Cognitive Decline Among African American Older Adults

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