Associations between habitual flavonoid intake and hospital admissions for atherosclerotic cardiovascular disease: a prospective cohort study

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  • Frederik Dalgaard, Department of Cardiology, Herlev-Gentofte Hospital, University Hospital Copenhagen, Herlev Ringvej 75, Herlev, Denmark., Danmark
  • Nicola P Bondonno, School of Medical and Health Sciences, Edith Cowan University, Perth, WA, Australia; School of Biomedical Sciences, University of Western Australia, Royal Perth Hospital, Perth, WA, Australia. Electronic address: n.bondonno@ecu.edu.au., Australien
  • Kevin Murray, School of Population and Global Health, University of Western Australia, Perth, WA, Australia., Australien
  • Catherine P Bondonno, School of Medical and Health Sciences, Edith Cowan University, Perth, WA, Australia; School of Biomedical Sciences, University of Western Australia, Royal Perth Hospital, Perth, WA, Australia., Australien
  • Joshua R Lewis, School of Medical and Health Sciences, Edith Cowan University, Perth, WA, Australia; School of Biomedical Sciences, University of Western Australia, Royal Perth Hospital, Perth, WA, Australia., Australien
  • Kevin D Croft, School of Biomedical Sciences, University of Western Australia, Royal Perth Hospital, Perth, Western Australia, Australia., Australien
  • Cecilie Kyrø, Danish Cancer Society Research Centre, Danish Cancer Society, Copenhagen, Denmark., Danmark
  • Gunnar Gislason, Department of Cardiology, Herlev & Gentofte University Hospital, Copenhagen, Denmark; National Institute of Public Health, University of Southern Denmark, Odense, Denmark; Danish Heart Foundation, Copenhagen, Denmark., Danmark
  • Augustin Scalbert, Biostatistics Group, International Agency for Research on Cancer, Lyon, France., Frankrig
  • Aedin Cassidy, Institute for Global Food Security, Queen's University Belfast, Belfast, Northern Ireland., Storbritannien
  • Anne Tjønneland, Danish Cancer Society Research Centre, Danish Cancer Society, Copenhagen, Denmark., Danmark
  • Kim Overvad
  • Jonathan M Hodgson, School of Medical and Health Sciences, Edith Cowan University, Perth, WA, Australia; School of Biomedical Sciences, University of Western Australia, Royal Perth Hospital, Perth, WA, Australia., Australien

BACKGROUND: Flavonoids, compounds found in plant-based foods and beverages, might ameliorate vascular damage and atherosclerosis. Therefore, our aim was to assess the association between flavonoid intake and hospital admissions due to atherosclerotic cardiovascular disease.

METHODS: In this prospective cohort study, participants from the Danish Diet, Cancer, and Health Study were cross-linked with Danish nationwide registries. Eligible participants were aged 50-65 years, had no previous history of atherosclerotic cardiovascular disease, and had completed a food-frequency questionnaire at baseline. We examined associations between flavonoid intake (calculated from food-frequency questionnaires with use of the Phenol-Explorer database) and hospital admissions for atherosclerotic cardiovascular disease, ischaemic heart disease, ischaemic stroke, or peripheral arterial disease. We obtained hazard ratios (HRs) using restricted cubic splines based on Cox proportional hazards models.

FINDINGS: Of the participants recruited to the Danish Diet, Cancer, and Health study between 1993 and 1997, our study population was comprised of 53 552 participants, with a median follow-up of 21 years (IQR 15-22). During follow-up, 8773 participants were admitted to hospital for atherosclerotic cardiovascular disease. We observed non-linear associations between flavonoid intake and hospital admissions, plateauing at total flavonoid intakes of approximately 1000 mg per day. Compared with an intake of 175 mg per day, an intake of 1000 mg per day was associated with a 14% lower risk of atherosclerotic cardiovascular disease (HR 0·86, 95% CI 0·81-0·91). For disease subtypes, we observed a 9% lower risk of ischaemic heart disease (0·91, 0·85-0·98), a non-significant 9% lower risk of ischaemic stroke (0·91, 0·82-1·01), and a 32% lower risk of peripheral artery disease (0·68, 0·60-0·78). The overall associations were stronger in smokers than in non-smokers, as well as stronger in consumers of high (>20 g per day) quantities of alcohol than in those consuming low-to-moderate (≤20 g per day) quantities.

INTERPRETATION: Our results suggest that ensuring an adequate consumption of flavonoid-rich foods, particularly in subpopulations at risk of atherosclerosis such as smokers and consumers of high quantities of alcohol might mitigate some of the risk of atherosclerotic cardiovascular disease. More studies are needed to support and validate these data.

FUNDING: Danish Cancer Society.

OriginalsprogEngelsk
TidsskriftThe Lancet. Planetary Health
Vol/bind3
Nummer11
Sider (fra-til)e450-e459
Antal sider10
ISSN2542-5196
DOI
StatusUdgivet - nov. 2019

Bibliografisk note

Copyright © 2019 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license. Published by Elsevier Ltd.. All rights reserved.

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