glutathione ferroptosis is a type of cell death driven by uncontrolled peroxidation of membrane phospholipids. peroxidase 4 (GPX4) is the main regulator of ferroptosis, but how it protects membranes is not well Oxytosis/Ferroptosis in Neurodegeneration: the Underlying
Description
So even if sufficient B12 is absorbed through food, the body cannot utilize it properly in this case

Yang, Y., Zheng, S
Then, we discuss the relationship between the GSH system and ferroptosis in myocardial injury

doi: 10.1089/ars.2008.2177