Assessment of the Cost of the Mediterranean Diet in a Low-Income Region: Adherence and Relationship with Available Incomes
Abstract BackgroundThe Mediterranean Diet (MD) is recognized as heart-healthy, but the economic cost associated with this type of diet has scarcely been studied.AimThe objective of the present study was to explore the cost and adherence of the low-income region population to the MD and its relationship with available incomes.MethodsA population-based study was carried out on 2,833 subjects between 25 and 79 years of age, 54% women, selected at random from the communities of Vegas Altas, La Siberia and La Serena in the province of Badajoz, Extremadura, Spain. The average cost of each product included in the MD and monthly expenditure were calculated. The expenditure was related to the degree of adherence to the MD (the Panagiotakos Index) and to the incomes of the participants.ResultsThe monthly median cost was 203.6 euros (IQR 154.04-265.37). Food-related expenditure was higher among the male population (p<0.001) of between 45 and 54 years of age (p<0.013) and living in urban areas (p<0.001). A positive correlation between food-related expenditure and the MD adherence was found. Expenditure represents 15% of total incomes, ranging from 11% for the group with a low MD adherence to 17% for the group with a high MD adherence.Conclusions The monthly cost of the MD was positively correlated with the degree of adherence to this dietary pattern, and is similar to that of other regions of Spain with higher per capita income, which entails a greater expenditure for equal adherence to the MD.