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However, with illness, infection, and other stressors, levels of vitamin C are rapidly depleted due to increased needs, meaning demands further increase from baseline values

Without adequate copper availability through GHK-Cu, newly formed collagen fibers cannot achieve proper structural cross-linking, making them vulnerable to rapid degradation by metalloproteinases

Glial pathology in an animal model of depression: reversal of stress-induced cellular, metabolic and behavioral deficits by the glutamate-modulating drug riluzole

Tryptophan supplementation has been shown to reduce stress-related behaviours in fish, such as aggression and hyperactivity, by increasing serotonin levels in the brain [89]