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GSH is a key intracellular thiol that helps neutralize ROS and maintain the balance between protein thiols and disulfides
However, further dose-response analysis and adjustment for intake of other vitamin and mineral supplements indicated that all-cause mortality risk was significantly increased by 7% only at a dose of 2,000 IU/day, which is notably higher than the UL for adults (1,100 IU/day of synthetic tocopherol or 1,500 IU/day of natural tocopherol)
A promising biological hypothesis is not the same thing as a proven treatment
it also puts an unnecessary load on the digestive tract
It works by inhibiting the enzyme tyrosinase and shifting the production of dark pigment (eumelanin) to a lighter pigment (pheomelanin), which may support a more even skin tone