Cruciferous and total vegetable intakes are inversely associated with subclinical atherosclerosis in older adult women

Lauren Blekkenhorst, Catherine Bondonno, Joshua Lewis, Richard Woodman, Amanda Devine, Nicola P Bondonno, Wai Lim, Kun Zhu, Lawrence Beilin, Peter Thompson, Richard Prince, Jonathan Hodgson

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    Abstract

    Background

     

    Dietary patterns rich in fruits and vegetables are considered to reduce atherosclerotic disease presentation and are reported to be inversely associated with subclinical measures of atherosclerosis, such as carotid artery intima‐media thickness (IMT) and plaque. However, the effect of vegetable intake alone, and relationships to specific types of vegetables containing different phytochemical profiles, is important. The aim of this study was to investigate the associations of total vegetable intake and specific vegetables grouped according to phytochemical constituents with common carotid artery IMT (CCA‐IMT) and carotid plaque severity in a cohort of older adult women (aged ≥70 years).

    Methods and Results

     

    Total vegetable intake was calculated at baseline (1998) using a validated food frequency questionnaire. Vegetable types included cruciferous, allium, yellow/orange/red, leafy green, and legumes. In 2001, CCA‐IMT (n=954) and carotid focal plaque (n=968) were assessed using high‐resolution B‐mode carotid ultrasonography. Mean (SD) total vegetable intake was 199.9 (78.0) g/d. Women consuming ≥3 servings of vegetables each day had ≈4.6% to 5.0% lower mean CCA‐IMT (P=0.014) and maximum CCA‐IMT (P=0.004) compared with participants consuming <2 servings of vegetables. For each 10 g/d higher in cruciferous vegetable intake, there was an associated 0.006 mm (0.8%) lower mean CCA‐IMT (P<0.01) and 0.007 mm (0.8%) lower maximum CCA‐IMT (P<0.01). Other vegetable types were not associated with CCA‐IMT (P>0.05). No associations were observed between vegetables and plaque severity (P>0.05).

    Conclusions

     

    Increasing vegetables in the diet with a focus on consuming cruciferous vegetables may have benefits for the prevention of subclinical atherosclerosis in older adult women.

    Original languageEnglish
    Article numbere008391
    Number of pages13
    JournalJAMA-Journal of The American Medical Association
    Volume7
    Issue number8
    DOIs
    Publication statusPublished - 4 Apr 2018

    Bibliographical note

    Open access article under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes

    Keywords

    • vegetables
    • atherosclerosis
    • cruciferous
    • carotid intima-media thickness
    • carotid plaque

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  • Cite this

    Blekkenhorst, L., Bondonno, C., Lewis, J., Woodman, R., Devine, A., Bondonno, N. P., Lim, W., Zhu, K., Beilin, L., Thompson, P., Prince, R., & Hodgson, J. (2018). Cruciferous and total vegetable intakes are inversely associated with subclinical atherosclerosis in older adult women. JAMA-Journal of The American Medical Association, 7(8), [e008391]. https://doi.org/10.1161/JAHA.117.008391