IL6 and hypertensive disorder: Table 3 demonstrates the association of HDL-C and hypertension with physiological successful aging stratified by baseline age groups (65–74 years vs. 75 years and older), CRP groups [low- vs. high-level (≥ 0.14 mg/dl)] and IL-6 groups [low- vs. high-level (≥ 2.2 pg/ml)].