Participants with more features of MetS tended to have relatively lower serum 25(OH)D (ptrend < 0.001) and osteocalcin levels (ptrend < 0.05); and a higher HOMA-IR index (ptrend < 0.001) and HbA1c levels (ptrend < 0.001) (Figs 1–4). Here, BGLAP is linked to metabolic syndrome.