Fig. (2) Serum levels of IL-12 in obese individuals. Circulating levels of IL-12 (a) were assessed in group 1, group 2, and group 3 differs by BMI level. Serum IL-12 was elevated in group 2 and group 3. Data are expressed as median and interquartile range in a box plot analysis. Differences were considered significant when P < 0.05.