GSTM1 and Hyperglycemia: Although the mechanism of such an increase of CIMT is unclear, it is possible that mild hyperglycemia may induce slight overhydration and a decrease of Hb by hemodilution, which may be associated with a decrease of baseline CIMT, while normalization of hemodynamics by improvement of glycemic control during admission may return CIMT to the level before the onset of recent mild hyperglycemia.