low glutathione in the body is one of body's major antioxidants, and research suggests it may help support cellular health and reduce oxidative stress, which is why it's getting more attention areas like autoimmune Glutathione: Benefits & How to
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Its ability to neutralise free radicals has led to it often being referred to as the master antioxidant

"Sexual Transmission of HIV." N Engl J Med 336.15 (1997): 1072-8

In a human pilot study published in Redox Biology, a single oral dose of glutamylcysteine increased intracellular glutathione in lymphocytes above homeostatic levels

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