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Using Evidence Mapping to Examine Motivations for Following Plant-Based Diets.

Akari J Miki, Kara A Livingston, Micaela C Karlsen, Sara C Folta, Sciprofile linkNicola M McKeown
Current Developments in Nutrition , Volume 4; doi:10.1093/cdn/nzaa013

Abstract: Motivations to adopt plant-based diets are of great public health interest. We used evidence mapping to identify methods that capture motivations to follow plant-based diets and summarize demographic trends in dietary motivations. We identified 56 publications that described 90 samples of plant-based diet followers and their dietary motivations. We categorized the samples by type of plant-based diet: vegan (19%), vegetarian (33%), semivegetarian (24%), and other, unspecified plant-based diet followers (23%). Of 90 studies examined, 31% administered multiple-choice questions to capture motivations, followed by rate items (23%), Food Choice Questionnaire (17%), free response (9%), and rank choices (10%). Commonly reported motivations were health, sensory/taste/disgust, animal welfare, environmental concern, and weight loss. The methodological variation highlights the importance of using a structured questionnaire to investigate dietary motivations in epidemiological studies. Motivations among plant-based diet followers appear distinct, but evidence on the association between age and motivations appears limited.
Keywords: vegetarian / vegan / motivations / Plant-based Diets / Evidence Mapping / Food choice questionnaire / Flexitarian

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