In HT-29 cells, CBD (30 μM) attenuated cancer cell growth and induced necrosis, accompanied by diminished glutathione (GSH)-to-oxidized-glutathione (GSSG) ratio, level of ascorbic acid (AA), activity of catalase (CAT), and GPx and GR, as well as elevated levels of malondialdehyde (MDA) [50]. This evidence concerns the gene CAT and cancer.