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Since GSH is the final product of the homocysteine metabolism in the transsulfuration pathway by transferring sulfur from homocysteine to cysteine, a deficiency in transsulfuration pathway leads to excessive homocysteine production (hyperhomocysteinemia) and reduced GSH synthesis (159, 160)

Glutathione is particularly adept at binding with heavy metals (such as lead, mercury, and arsenic), which forms the basis for its use in treating heavy metal poisoning

Fact: They do not use the same transport pathways

Yes, while this was once a topic of debate, recent clinical studies have confirmed that glutathione can be effectively absorbed orally when taken as a supplement

It also plays a critical role in regulating redox balance and modulating cellular signaling pathways