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J., Wang, C
Dietary Sources of Cysteine Cysteine is a precursor to glutathione
1 2 "Discovery and Characterization of the Metallopterin-Dependent Ergothioneine Synthase from Caldithrix abyssi"
Preserving its reduced state and supporting GSH levels may, therefore, promote healthy brain aging and enhance resilience to neurological disease
The mechanism is that fistein inhibits GSK-3 , which activates - Catenin, which leads to melanogenesis by activating MITF and tyrosinase (Molagoda et al., 2020)
Because GH resistance is common at this stage, IGF-1 may not rise substantially even with adequate GH secretion, so do not use IGF-1 alone to justify dose escalation
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