Moran, Rachel and Nolan, J. M. and Stack, J. and O’Halloran, A. M. and Feeney, J. and Akuffo, K. O. and Kenny, R. A. and Beatty, S. (2017) Non-dietary correlates and determinants of plasma lutein and zeaxanthin concentrations in the Irish population. Journal of Nutrition, Health and Aging, 21 (3). pp. 254-261. ISSN 1279-7707
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Objective: To investigate non-dietary correlates and determinants of plasma lutein (L) and zeaxanthin (Z) concentrations in The Irish Longitudinal Study on Ageing (TILDA) sample. Setting: Community dwelling adults in the Republic of Ireland (ROI). Participants: 3,681 participants aged 50 years and older. Measurements: TILDA is a nationally representative prospective cohort study of community dwelling adults aged 50 years and over in the ROI. Demographic and health variables were collected during a face-to-face interview carried out in the home (n=8175), and a substantial proportion of these (n=5035; 62%) also attended a study visit in a health assessment centre. Blood samples collected at baseline (wave 1, the subject of the current study), were analysed for plasma concentrations of L and Z by reversed-phase high performance liquid chromatography, and macular pigment (MP) optical density was also measured (using customized heterochromatic flicker photometry). Results: After excluding participants with eye disease, data from 3,681 participants were available for analysis. For this group of participants, plasma L and Z were inversely and significantly associated with body mass index (BMI), and were positively and significantly associated with MP, total cholesterol, high-density lipoprotein (HDL) and low-density lipoprotein (LDL) (p<0.001, for all). Plasma L and Z were significantly lower in males, current smokers, participants reporting less physical exercise, and participants reporting lower levels of education (p<0.05, for all). Plasma L was significantly higher in participants reporting a family history of age-related macular degeneration (AMD) (p=0.001), and in the group of ≥75 years old (p<0.05). For each of these variables, the significant associations remained after controlling for other potential confounding variables. Conclusion: The findings of this large study indicate that plasma concentrations of L and Z were lower in association with indicators of a poor lifestyle (high BMI, tobacco use, and less physical exercise) and in association with lower education, indicating that modifying lifestyle in a positive way is likely to be reflected in higher concentrations of plasma carotenoids, with consequential and putative health benefits.
Item Type: | Article |
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Additional Information: | Publisher Copyright: © 2016, Serdi and Springer-Verlag France. |
Uncontrolled Keywords: | /dk/atira/pure/subjectarea/asjc/2700/2701 |
Departments or Groups: | |
Depositing User: | Admin SSL |
Date Deposited: | 19 Oct 2022 23:05 |
Last Modified: | 07 Jun 2023 18:43 |
URI: | http://repository-testing.wit.ie/id/eprint/3970 |
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