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Lettuce be happy: A longitudinal UK study on the relationship between fruit and vegetable consumption and well-being

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JournalSocial Science & Medicine
DateAccepted/In press - 9 Dec 2018
DateE-pub ahead of print - 7 Jan 2019
DatePublished (current) - 1 Feb 2019
Volume222
Number of pages11
Pages (from-to)335-345
Early online date7/01/19
Original languageEnglish

Abstract

RATIONALE: While the role of diet in influencing physical health is now well-established, some recent research suggests that increased consumption of fruits and vegetables could play a role in enhancing mental well-being. A limitation with much of this existing research is its reliance on cross-sectional correlations, convenience samples, and/or lack of adequate controls.

OBJECTIVE: We aim to add to the emerging literature on the relationship between fruit and vegetable consumption and well-being by using longitudinal data from a study in the United Kingdom (UK).

METHOD: We employ panel data analytical techniques on three waves collected between 2010 and 2017 (i.e., following the same individuals over time) in the UK Household Longitudinal Survey. We also control for time-variant confounders such as diet, health, and lifestyle behaviours.

RESULTS: Fixed effects regressions show that mental well-being (GHQ-12) responds in a dose-response fashion to increases in both the quantity and the frequency of fruit and vegetables consumed. This relationship is robust to the use of subjective well-being (life satisfaction) instead of mental well-being. We also document a hump-shaped relationship between fruit and vegetable consumption and age.

CONCLUSION: Our findings provide further evidence that persuading people to consume more fruits and vegetables may not only benefit their physical health in the long-run, but also their mental well-being in the short-run.

Bibliographical note

© 2019 The Authors.

    Research areas

  • Diet, Fixed-effects, Fruit and vegetables, GHQ-12, Panel data, UK, UKHLS, Well-being

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