Components of air pollution and cognitive function in middle-aged and older adults in Los Angeles

Objective: This study examined the association between childhood conditions and cognitive function among middle-aged and older adults in China. Method: We analyzed data from the 2011 China Health and Retirement Longitudinal Study ( N = 11,868). Cognitive function was measured by word recall, a test of episodic memory. We examined the association between childhood conditions and cognitive function among the middle-aged (45-59 years) and the older (60 years and older) adults separately, using multilevel linear regressions. Results: Indicators of childhood socioeconomic status (SES) and nutrition were significantly associated with memory performance among the middle-aged and the older adults in China. Adulthood SES, education in particular, accounted for some but not all the associations. The protective effect of childhood urban residence was stronger for middle-aged women than for middle-aged men. Discussion: Childhood conditions are significantly associated with mid- to late-life cognitive function in China. The strengths of the associations may vary by gender and cohort.

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Link Between Dietary Sodium Intake, Cognitive Function, and Dementia Risk in Middle-Aged and Older Adults: A Systematic Review

Journal of Alzheimer s Disease ◽

10.3233/jad-191339 ◽

2020 ◽

pp. 1-27

Author(s):

Devi Mohan ◽

Kwong Hsia Yap ◽

Daniel Reidpath ◽

Yee Chang Soh ◽

Andrea McGrattan ◽

...

Keyword(s):

Systematic Review ◽

Older Adults ◽

Cognitive Function ◽

Sodium Intake ◽

Dietary Sodium ◽

Middle Aged ◽

Dementia Risk

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Polypharmacy Is Associated with Lower Memory Function in African American Older Adults

Brain Sciences ◽

10.3390/brainsci10010049 ◽

2020 ◽

Vol 10 (1) ◽

pp. 49 ◽

Cited By ~ 1

Author(s):

Shervin Assari ◽

Cheryl Wisseh ◽

Mohammed Saqib ◽

Mohsen Bazargan

Keyword(s):

Older Adults ◽

African American ◽

Cognitive Function ◽

Los Angeles ◽

Living Arrangement ◽

Memory Function ◽

Continuous Variable ◽

Financial Strain ◽

Outcome Variable ◽

Future Research

Although previous research has linked polypharmacy to lower cognitive function in the general population, we know little about this association among economically challenged African American (AA) older adults. This study explored the link between polypharmacy and memory function among AA older adults. This community-based study recruited 399 AA older adults who were 65+ years old and living in economically disadvantaged areas of South Los Angeles. Polypharmacy (taking 5+ medications) was the independent variable, memory function was the outcome variable (continuous variable), and gender, age, living arrangement, socioeconomic status (educational attainment and financial strain), health behaviors (current smoking and any binge drinking), and multimorbidity (number of chronic diseases) were the covariates. Linear regression was used for data analyses. Polypharmacy was associated with lower scores on memory function, above and beyond covariates. Among AA older adults, polypharmacy may be linked to worse cognitive function. Future research should test the mechanisms by which polypharmacy is associated with lower levels of cognitive decline. There is a need for screening for memory problems in AA older adults who are exposed to polypharmacy.

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Traffic-related Air Pollution in Relation to Cognitive Function in Older Adults

Epidemiology ◽

10.1097/ede.0000000000000144 ◽

2014 ◽

Vol 25 (5) ◽

pp. 674-681 ◽

Cited By ~ 87

Author(s):

Cathryn Tonne ◽

Alexis Elbaz ◽

Sean Beevers ◽

Archana Singh-Manoux

Keyword(s):

Older Adults ◽

Air Pollution ◽

Cognitive Function

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O4-06-03: Social support, verbal interaction, and cognitive function among middle-aged and older adults in the wisconsin registry for Alzheimer's prevention (WRAP) study

Alzheimer s & Dementia ◽

10.1016/j.jalz.2015.07.377 ◽

2015 ◽

Vol 11 (7S_Part_6) ◽

pp. P281-P281

Author(s):

Megan Zuelsdorff ◽

Rebecca L. Koscik ◽

Ozioma C. Okonkwo ◽

Sterling C. Johnson ◽

Corinne D. Engelman

Keyword(s):

Social Support ◽

Older Adults ◽

Cognitive Function ◽

Verbal Interaction ◽

Middle Aged

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Association between tea consumption and cognitive impairment in middle-aged and older adults

BMC Geriatrics ◽

10.1186/s12877-020-01848-6 ◽

2020 ◽

Vol 20 (1) ◽

Author(s):

Jia Zhang ◽

Anxin Wang ◽

Xiaoli Zhang ◽

Shuohua Chen ◽

Shouling Wu ◽

...

Keyword(s):

Older Adults ◽

Cognitive Impairment ◽

Cognitive Function ◽

Green Tea ◽

High Frequency ◽

Epidemiological Studies ◽

Neuroprotective Activity ◽

Tea Consumption ◽

Older Individuals ◽

Middle Aged

Abstract Background Biologic studies have suggested that tea may have neuroprotective activity. However, tea’s protective effect on cognitive function is controversial in human epidemiological studies, and no data, including the middle-aged, are available. The objective of this study was to investigate the association of habit, frequency, and types of tea consumption with incident cognitive impairment in middle-aged and older adults. Methods Data from the Asymptomatic Polyvascular Abnormalities in Community study were used (aged over 40y). We gathered information on tea consumption, including habit, frequency, and types, via a standardized questionnaire and assessed cognitive function by Mini-Mental State Examination (MMSE) and/or Montreal Cognitive Assessment (MoCA). Three thousand eight hundred sixty-eight and 806 participants were selected in MMSE and MoCA subgroups. Multivariate logistic regression models were utilized to examine associations between tea consumption and cognitive impairment in middle-aged and older participants. Results In MMSE analyses, after adjustment for potential confounding factors, habitual (odds ratio (OR) 0.47, [95% confidence interval (CI) 0.33–0.68], p < 0.001) and high frequency (p trend < 0.001) of tea intake were associated with a lower risk of cognitive impairment. The risk of cognitive impairment was lower in green tea consumption (OR 0.36, [95% CI 0.22–0.61], p < 0.001) than other types (OR 0.59, [95% CI 0.38–0.91], p = 0.017). In MoCA analyses, we got similar results. Conclusions Habitual tea consumption, especially high-frequency and green tea consumption, was significantly associated with a lower prevalence of cognitive impairment in middle-aged and older individuals.

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