Association between bone mineral content and dietary patterns among Brazilian adults from Vicosa, Minas Gerais: a population-based study

Objective The aim of the study was to investigate if there is an association between dietary patterns and bone mineral content among Brazilian adults. Methods This is a cross-sectional, population-based study. Bone health was assessed using dual-energy x-ray absorptiometry. The dietary pattern was obtained using a food frequency questionnaire. An exploratory factor analysis obtained the dietary patterns. Linear regression was used for the multivariate analysis. The research was conducted with adult individuals (20-59 years old) of both sexes residing in the city of Vicosa, MG, Brazil (n=572). Results Two distinct dietary patterns were identified: a "meats and alcoholic drinks" pattern, composed of condiments, alcoholic drinks, dough-based foods, and savory snacks; and a "local traditional" pattern, composed of eggs, beans, trooper's beans, margarine, butter, olive oil, coffee and tea, cereals, and tubers (factor loadings >= 0.20). Having verified the associations considering the confounding factors, we identified that the bone mineral content for males was positively associated with the "local traditional" dietary pattern (beta=0.058; 95% CI: 0.003-0.112; beta=0.036), and for females an inverse association with the "meats and alcoholic drinks" pattern was found (beta=-0.057; 95% CI: -0.110 -0.003; p=0.037). Conclusion We identified a positive association between the local traditional dietary pattern and bone health.