Cited by 83Nutritional Studies and DietPhytochemicals and Antioxidant ActivitiesCardiac Health and Mental Health

A High Polyphenol Diet Improves Psychological Well-Being: The Polyphenol Intervention Trial (PPhIT)

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Kontogianni, Meropi D., Vijayakumar, Aswathy, Rooney, Ciara, Noad, Rebecca L., Appleton, Katherine M., McCarthy, Danielle, Donnelly, Michael, Young, Ian S. +3 more·2020·Nutrients

Abstract

Mental ill health is currently one of the leading causes of disease burden worldwide. A growing body of data has emerged supporting the role of diet, especially polyphenols, which have anxiolytic and antidepressant-like properties. The aim of the present study was to assess the effect of a high polyphenol diet (HPD) compared to a low polyphenol diet (LPD) on aspects of psychological well-being in the Polyphenol Intervention Trial (PPhIT). Ninety-nine mildly hypertensive participants aged 40–65 years were enrolled in a four-week LPD washout period and then randomised to either an LPD or an HPD for eight weeks. Both at baseline and the end of intervention, participants’ lifestyle and psychological well-being were assessed. The participants in the HPD group reported a decrease in depressive symptoms, as assessed by the Beck Depression Inventory-II, and an improvement in physical component and mental health component scores as assessed with 36-Item Short Form Survey. No differences in anxiety, stress, self-esteem or body image perception were observed. In summary, the study findings suggest that the adoption of a polyphenol-rich diet could potentially lead to beneficial effects including a reduction in depressive symptoms and improvements in general mental health status and physical health in hypertensive participants.

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  • In another study, a group of 50 volunteers for 8 weeks consumed dark chocolate and blueberries; increased intake of flavonoids resulted in reduced symptoms of depression.

    “In another study, a group of 50 volunteers for 8 weeks consumed dark chocolate and blueberries (Kontogianni et al. 2020). Increased intake of flavonoids resulted in reduced symptoms of depression.”

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  1. [41]Cash T.F. MBSRQ Users™ Manual Old Dominion University Press Norfolk, VA, USA 2000

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Authors
Kontogianni, M. D., Vijayakumar, A., Rooney, C., Noad, R. L., Appleton, K. M., McCarthy, D., Donnelly, M., Young, I. S., McKinley, M. C., McKeown, P. P., & Woodside, J. V.
Affiliations
  • Harokopio University of Athens (GR)
  • Queen's University Belfast (GB)
  • Bournemouth University (GB)
Corresponding author
Woodside, Jayne V.
Venue
Nutrients
Publisher
MDPI AG
Published
2020-08-14
Volume
12
Issue
8
Pages
2445
ISSN
2072-6643 (ISSN-L)
OpenAlex
W3049609680
Cited by
83
References
59
Citations by year
2026: 8 · 2025: 33 · 2024: 9 · 2023: 12 · 2022: 10 · 2021: 9 · 2020: 2
FWCI
6.18
Type
journal article
Language
en
Open access
Locations
  • Nutrients (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Bournemouth University Research Online (Bournemouth University) (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Research Portal (Queen's University Belfast) (submittedVersion, cc-by)
Funders
  • Northern Ireland Health and Social Care Research and Development doctoral fellowship award (EAT/4195/09)
  • Northern Ireland Chest Heart and Stroke scientific research grant (2010_17)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Health and Mental Health
Keywords
dietary polyphenols, psychological well-being, depressive symptoms, mental health, hypertension, antidepressant effects, anxiety, self-esteem, body image, lifestyle intervention
MeSH terms
Adult, Aged, Anxiety, Body Image, Depression, Female, Health Status, Humans, Hypertension, Life Style, Male, Mental Health, Middle Aged, Self Concept, Dietary Supplements, Polyphenols

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