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Accounting for consumers’ preferences in the analysis of dietary recommendations

Linda Cobiac, Xavier Irz, Pascal Leroy (), Vincent Réquillart (), Peter Scarborough and Louis Georges Soler ()
Additional contact information
Linda Cobiac: University of Melbourne
Xavier Irz: Natural resources institute Finland
Pascal Leroy: ALISS - Alimentation et sciences sociales - INRA - Institut National de la Recherche Agronomique
Peter Scarborough: University of Oxford
Louis Georges Soler: ALISS - Alimentation et sciences sociales - INRA - Institut National de la Recherche Agronomique

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Abstract: The goal of this article is to present and demonstrate the applicability of an original method to assess the economic and health impacts of compliance with food-based recommendations. The method takes account of consumers' preferences and the associated adoption cost in the assessment of various recommendations. We combine an economic model of diet choice with an epidemiological model to compute the health impacts of dietary changes. To demonstrate the use of the method, we analyse the impacts of a 5% variation in the consumption of seven food groups taken separately: a 5% increase in consumption of fruits and vegetables (F&V) and milk products; and a 5% decrease in consumption of red meat, all meats, salty/sweet products, ready meals and butter/cream/cheese. A recommendation, when adopted by consumers, generates important changes in the whole diet due to substitutions and complementarities among foods. All simulated recommendations have a positive impact on health. The F&V recommendation has the largest impact on the number of DALYs averted, but the highest adoption cost for consumers, especially for low-income consumers. Alone, the change in energy intake explains from 71% to 98% of the DALYs averted induced by a recommendation. Small increases in recommended foods have the potential of generating relatively significant health gains. Preference-driven substitutions among foods have a major effect on simulated health outcomes and should be included in the assessment of dietary recommendations, together with the adoption cost borne by consumers.

Keywords: economics; consumer; diet; recommendation; health (search for similar items in EconPapers)
Date: 2019
Note: View the original document on HAL open archive server: https://hal.archives-ouvertes.fr/hal-02244975
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Published in European Journal of Clinical Nutrition, Nature Publishing Group, 2019, 73 (7), pp.1033-1039. ⟨10.1038/s41430-018-0317-5⟩

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