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FIGURE 1 A total of 32 articles were identified and deemed fit according to the inclusion and exclusion criteria
Glutathione functions through two primary mechanisms: direct scavenging of reactive oxygen species (ROS) and serving as a cofactor for glutathione peroxidase, a family of enzymes that neutralize hydrogen peroxide and lipid peroxides [2][4]
Systemic anti-aging and injectable regeneration claims are weakest because they lack strong human confirmation and face regulatory safety concerns [8], [17]
Neuroprotection: Preclinical research has explored possible protective effects in age-related neurological studies
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