Patients affected by AIP present a situation of potential oxidative stress similar to those affected by VP and characterized by increased H2O2 production by post-transcriptionally activated SOD and impaired H2O2 detoxifying mechanisms, such as catalase, pointing out that the supplementation of the diet of these patients with higher intakes of antioxidants could ameliorate its pathological condition. Here, CAT is linked to autoimmune pancreatitis.