GSTM1 and bulimia nervosa: In the CTL group, the mean change in oxy-Hb concentration during the LFT in channel 9 was significantly correlated with the score on the drive for thinness subscale of the EDI-2 (r = -0.39, p < 0.05), and the mean change in channel 4 was significantly correlated with the score on the bulimia subscale of the EDI-2 (r = -0.46, p < 0.05).