The study of inequalities in consumption of harmful diet

Abstract

Abstract Objectives: the current dietary pattern is found increasingly unsafe, unstable and unequal for a huge part of the populations. Disadvantaged populations were usually known by less healthy diets and were at a higher risk of disease in comparison to high socio- economic groups. The evidence on correlates of inequality in the diet quality has not been systematically reviewed. The current scoping review study aims at indicating the effective factors on inequality in the quality of diets. Method: the academic databases including Scopus, Web of science, PubMed, SID (Scientific Information Database), ISC(Islamic World Science Citation Center), Google scholar search engine, WHO (World Health Organization) and the website of the European Union until April 2021 were systematically reviewed. Also, the studies that focused on examining factors causing inequality in the quality of diets were included. We used vote counting technique to identify the effective factors causing inequality in the quality of diets. Results: a number of 26 articles from 13 countries met the inclusion criteria. The subjects in the studies were older adults, adults, children, students and pregnant mothers. The factors that have caused inequality in the quality of diets were divided into two categories of demographic and socioeconomic. It was found that any increase in age, income, education, different ethnic groups, smoking and occupational statues increased inequality in diet quality. Also, as a factor physical activity, could reduce inequality in diet quality. Moreover, type of residence in terms of access to food, dominant available food, culture, and lifestyle of the area could cause inequality in diet quality. Conclusion: According to the results of this study, the effective factors on inequality in the quality of diet are demographic and socio-economic factors that cannot be manipulated by policy makers. However, increasing the knowledge of individuals, and providing subsidies to poorer individuals reduce inequality in the quality of the diets. Keywords: inequality, harmful diet, socio- economic groups.