Absolutely, and this is precisely why GGT is such a powerful longevity marker
Stoyanovsky DA, Tyurina YY, Shrivastava I, Bahar I, Tyurin VA, Protchenko O, et al
Mammalian cells are unable to produce cysteine de novo and the trans-sulfuration pathway which is required for the synthesis of cysteine from methionine is only present in the liver and a few other tissues 5
Comparative study of the antioxidant effects of metformin, glibenclamide, and repaglinide in alloxan-induced diabetic rats
Glutathione is well known for its skin benefits such as skin tone rejuvenation, reducing the appearance of wrinkles, and increasing skin elasticity