There was an increasing trend of endothelial dysfunction from control, LDH1, LDH2 to LDH3 group (36.8% vs. 49.4% vs. 55.0% vs. 59.8%, χ2=  = 36.751, p < 0.001) (Fig. 1) and among subgroups in hypertensives (χ2 = 8.847, p = 0.003). Here, LDHC is linked to endothelial dysfunction.