Potentially modifiable determinants of vitamin D status in an older population in the Netherlands: the Hoorn Study

BACKGROUND: Inadequate vitamin D status is common in many populations around the world. OBJECTIVE: The aim was to evaluate potentially modifiable determinants of vitamin D status in an older population. DESIGN: This was a cross-sectional study from a population-based cohort including 538 white Dutch men and women aged 60-87 y. Vitamin D status was assessed by plasma 25-hydroxyvitamin D [25(OH)D] concentrations. RESULTS: In the winter period, 51% of the subjects had 25(OH)D concentrations <50.0 nmol/L. Greater body fatness and less time spent on outdoor physical activity were associated with... Mehr ...