By maintaining adequate levels of glutathione, individuals may help protect their cells from damage, which is particularly important as we age and our natural production of glutathione declines
Lavoie S, Murray MM, Deppen P, et al
As a result, it is widely used in skin creams, serums, and lotions designed for topical use
Telomeres and the natural lifespan limit in humans
More specifically, mitophagy, the programmed quality-control pathway for mitochondria, becomes maladaptive in the EMS context
Whether someone with PA can utilize liver stores is something I'm not sure about - some textbooks indicate that the mobilization mechanism of B12 from the liver is not well understood