The second step in the cycle is, thus, the recombination of perthiyl radicals at a rate close to the diffusion limit 18
Levels of glutathione within the cells and mitochondria are highly associated with health and longevity, and its deficiency is associated with loss of function with aging and many chronic diseases (including depression, anxiety, Alzheimers, Parkinsons, heart disease, and even cancer)
Montrose-Rafizadeh C, Avdonin P, Garant MJ, et al
There are also a number of health conditions that prevent patients from being able to absorb a sufficient amount of vitamin B12 both through their diet and through vitamin supplements, making injections the only method that ensures they are not deficient