Associação entre concentração sérica de 25(OH)D, ingestão de alimentos fonte de vitamina D e cálcio, condições de saúde e presença de osteoporose e fraturas em idosos.

Background: Physiological alterations of aging contribute to osteoporosis and fractures, related to low serum 25(OH)D concentration. Objective: To investigate the association between serum 25(OH)D concentration, intake of foods source of vitamin D and calcium, health conditions and the presence of osteoporosis and fractures in seniors. Method: A cross-sectional study with 274 older adults from Piauí was carried out in two stages: a questionnaire on intake of food sources of vitamin D, calcium and health conditions (including the outcome variable, presence of osteoporosis and fractures), and blood collection for biochemical examination of serum 25(OH)D concentration. Descriptive and inferential analysis and logistic regression were performed. Results: Most participants had comorbidities (86.4%). The outcomes prevalence was 23.7 and 14.6%, respectively. In the multiple analysis, drinking alcoholic beverages (odds ratio -- OR=6.58; 95% confidence interval -- 95%CI 1.88-23) and calcium replacement (OR=2.87; 95%CI 1.25-6.61) were associated with fractures, while female (OR=5.69; 95%CI 1.12-28.9) and calcium replacement (OR=5.62; 95%CI:1.62-19.5) were associated with osteoporosis. The highest medians of 25(OH)D were found in those who regularly consumed cheese and yogurt (p=0.021). Conclusion: The analysis of serum concentrations of 25(OH)D indicated insufficiency, which suggests the need for interventions to change lifestyle. [ABSTRACT FROM AUTHOR]