Figure 1: Mean and SD of serum 25(OH)D3 levels of women and men according to their age in decades. The mean serum concentrations in women were significantly higher in the age cohort 21 to 30 (p<0.005*, student t-Test) and the lifespan between 61 and 90 (p<0.0001**, student t-Test) compared to the according male cohort.