CAT and metabolic syndrome: Our results demonstrated that Chaya consumption induced an increase in CAT gene expression in PBMC, which is in agreement with previous evidence that dietary intervention with food rich in antioxidants can modulate antioxidant enzymes in subjects with dyslipidemia; for example, the consumption of the traditional Chinese herb Graptopetalum paraguayense significantly increased the enzymatic activity of glutathione peroxidase and CAT (45), and aqueous wolfberry fruit intake enhanced the activity of CAT (46).