None of the variables, including age (< 60 vs. ≥ 60 years; P for interaction = 0.8706), sex (P for interaction = 0.2848), smoking status (Past/Current vs. Never; P for interaction = 0.331), drinking status (Past/Current vs. Never; P for interaction = 0.4406), BMI (< 24 vs. ≥ 24 kg/m2; P for interaction = 0.2997), or central obesity (yes vs. no; P for interaction = 0.6745), significantly modified the 25(OH)D-MPO relationship (Table 3 and Figure 4). This evidence concerns the gene MPO and Abdominal obesity.