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5 Glutathione Benefits for Your Health Published on April 21, 2026 Written by Kathleen Morrison Medically Reviewed by Andrea Sleeth WHNP-BC, MSCP Key takeaways Glutathione is often called the body's "master antioxidant"it helps neutralize free radicals, manage oxidative stress, and support cellular health

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Plasma GHK-Cu concentrations decline with age, from approximately 200 ng/mL at age 20 to under 80 ng/mL by age 60, correlating with reduced skin repair capacity

Understanding your personal biomarker profileincluding baseline glutathione levels, liver function, and genetic factors influencing detoxification capacityhelps inform more precision-focused supplementation strategies aligned with your broader wellness goals