Figure 1

Serum 25(OH)D concentrations of Lo-D and Hi-D status women. Mean (± SEM) serum 25(OH)D concentrations of healthy women, age 25–82 years, categorized as low vitamin D status (Lo-D; n = 49) or high vitamin D status (Hi-D; n = 20) based on UVB exposure. Single points for each category are means (± SEMS). *Significantly different from Lo-D, P < 0.0001.