Factors that influence diet quality in adult populations: A scoping review


Authors: Kristen Fleet, Christina Lengyel, Marcelo L Urquia, Ian Clara, and Peter Eck
Page Range: 133-155
Published in: International Public Health Journal, 15#2 (2023)
ISSN: 1947-4989

Table of Contents


Poor quality diets are a leading cause of death worldwide and a substantial economic burden for many countries. For this reason, a comprehensive review of the factors that influence diet quality among community dwelling adults was needed. Identifying these factors could inform future dietary interventions that are intended to improve diet quality and ultimately a population’s health. Objective: The objective of this review was to identify personal, social, sociodemographic, and environmental factors that influence diet quality in adults. Methods: A search of Scopus and CINAHL databases as well as Google Scholar was performed. Results were limited to journal articles involving adult participants that were published in English, within the last 10 years. There was no restriction on the country. Results: 120 articles met the inclusion criteria. The majority of studies were conducted in North American or Europe and had a cross-sectional design. The importance of the social environment, nutrition literacy, food skills, self-perceptions, and the food environment, emerged as significant factors in diet quality. Finally, sociodemographic groups tended to experience diet disparities. Conclusions: The social environment, food environment, nutrition skills and knowledge, self-perceptions, and the food environment influenced diet quality. Sociodemographic groups tended to experience diet disparities. This research may lead to better nutrition interventions and policies, particularly ones that target vulnerable populations.

Keywords: Diet quality, adults, food environment, psychosocial factors, scoping review

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