Noguchi K, Matsuzaki T, Shiroma N, Ojiri Y, Sakanashi M
In most cases, B12 deficiency is actually caused by malabsorption rather than low dietary intake
doi: 10.1159/000448793 95 ArmstrongAWReadC
Moreover, it has been shown that stomach cancer is more likely to develop as a result of the oxidative stress brought on by CagA-positive bacteria (74), in which H pylori CagA produces cells with oxidative DNA damage by inducing spermine oxidase (SMO), and a portion of these cells are apoptosis-resistant and therefore highly susceptible to developing cancer (75)
Immunologically GSH serves as a redox buffer, with GSH being the active form that upon neutralizing free radicals becomes converted into GSSG (Vairetti et al., 2021)