Figure 3

Distribution of metabolic serum markers in the Heinz Nixdorf Recall study by BMI groups.
(A) Vitamin D serum levels were close to the threshold to insufficiency (20 ng/ml) in all BMI groups <40 kg/m2. In the highest BMI group (>40 kg/m2) the lowest vitamin D values were observed, with a mean concentration indicating insufficiency. (B) Adiponectin was distributed in a similar way as vitamin D with lowest serum concentrations found in the highest BMI group.