SOD1 and irritable bowel syndrome: Regarding the differences occurring between the two primary groups, we observed that in IBS patients' SOD activity (F(1, 46) = 5.84, p = 0.020), MDA levels (F(1, 46) = 7.85, p = 0.007), and total soluble proteins levels (F(1, 46) = 5.94, p = 0.019) significantly increased, as compared to sex- and age-matched healthy controls (Figure 4).