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Nutrition, immigration and health determinants are linked to verbal fluency among Anglophone adults in the Canadian Longitudinal Study on Aging (CLSA)

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dc.contributor.authorFuller‑Thomson, Esme
dc.contributor.authorSaab, Zahraa
dc.contributor.authorDavison, Karen M.
dc.contributor.authorLin, Shen (Lamson)
dc.contributor.authorTaler, Vanessa
dc.contributor.authorKobayashi, Karen M.
dc.contributor.authorTong, Hongmei
dc.date.accessioned2021-07-14
dc.date.accessioned2022-05-31T01:44:18Z
dc.date.available2022-05-31T01:44:18Z
dc.date.issued2020
dc.description.abstractLater-life cognitive impairment is an important health issue; however, little is known about the condition among diverse groups such as immigrants. This study aims to examine whether the healthy immigrant effect exists for verbal fluency, an indicator of cognitive functioning, among anglophone middleaged and older adults in Canada. Methods: Using from the baseline data of the Canadian Longitudinal Study on Aging (CLSA), multiple linear regression was employed to compare associations among immigrants (recent and long-term) and Canadian-born residents without dementia for two verbal fluency tests, the Controlled Oral Word Association Test (COWAT) and the Animal Fluency (AF) task. Covariates included socioeconomic, physical health, and dietary intake. Results: Of 8,574 anglophone participants (85.7% Canada-born, 74.8% aged 45-65 years, 81.8% married, 81.9% with a post-secondary degree), long-term immigrants (settled in Canada >20 years) performed significantly better than Canadian-born residents for the COWAT (42.8 vs 40.9) but not the AF task (22.4 vs 22.4). Results of the multivariable adjusted regression analyses showed that long-term immigrants performed better than Canadian-born peers in both the COWAT (B=1.57, 95% CI: 0.80-2.34) and the AF test (B=0.57, 95% CI: 0.19-0.95), but this advantage was not observed among recent immigrants. Other factors associated with low verbal fluency performance included being single, socioeconomically disadvantaged, having hypertension, excess body fat, and consuming low amounts of pulses/nuts or fruit/vegetables. Conclusions: Long-term immigrants had higher verbal fluency test scores than their Canadian-born counterparts. Immigration status, social, health and nutritional factors are important considerations for possible intervention and prevention strategies for cognitive impairment.
dc.description.urihttps://library.macewan.ca/cgi-bin/SFX/url.pl/CEX
dc.identifier.citationFuller-Thomson, E., Saab, Z., Davison, K. M., LIN, S. L., Taler, V., Kobayashi, K., & Tong, H. M. (2020). Nutrition, immigration and health determinants are linked to verbal fluency among Anglophone adults in the Canadian Longitudinal Study on Aging (CLSA). The Journal of Nutrition, Health & Aging, 24(6), 672-680. DOI: 10.1007/s12603-020-1402-8
dc.identifier.doihttps://doi.org/10.1007/s12603-020-1402-8
dc.identifier.urihttps://hdl.handle.net/20.500.14078/2421
dc.languageEnglish
dc.language.isoen
dc.rightsAll Rights Reserved
dc.subjectexecutive function
dc.subjectletter fluency
dc.subjectsemantic fluency
dc.subjectCanadian Longitudinal Study on Aging (CLSA)
dc.subjectimmigrants
dc.subjectdietary intake
dc.titleNutrition, immigration and health determinants are linked to verbal fluency among Anglophone adults in the Canadian Longitudinal Study on Aging (CLSA)en
dc.typeArticle
dspace.entity.type

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