Since moderate obesity was associated more strongly with a lower risk of mortality than with normal, underweight, and overweight groups in the general population of South Korea (so called “obesity paradox”) [36], we performed association analyses of serum GGT level for baPWV, carotid IMT, and plaque grade after subdividing patients according to the BMI levels (data not shown). This evidence concerns the gene GGT1 and obesity due to melanocortin 4 receptor deficiency.