ADIPOQ and type 2 diabetes mellitus: High plasma adiponectin was associated with lower type 2 diabetes risk in the whole population (OR = 0.61; 95%CI: 0.46–0.80; p = 4.4 × 10−4) for the dichotomous variable for adiponectin (high versus low concentrations), in a model adjusted for sex, age, BMI, smoking, physical activity and adherence to the Mediterranean diet.