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Glutathione: The Body’s Master Antioxidant

research · Biochemical research on antioxidant systems (2026)

Confidence: High

Glutathione is the body's primary intracellular antioxidant, essential for detoxification, mitochondrial function, and immune defense.

Core Concepts

The Problem

Oxidative stress damages cells, accelerating aging and disease.

The Claim

Glutathione is the body's primary intracellular antioxidant, essential for detoxification, mitochondrial function, and immune defense.

Key Evidence

  • Endogenously produced and present in all cells
  • Critical for neutralizing free radicals and reactive oxygen species
  • Levels decline with age and chronic stress

Practical Implication

Supporting glutathione levels may help maintain cellular health, energy, and cognitive function.

Nuance & Limits

Most oral supplements are poorly absorbed; delivery methods are key to clinical benefit.

Source Material

Citation Density

High

Gaps

  • Optimal dosing and long-term safety of supplementation need more research
  • Variability in individual glutathione synthesis pathways not fully understood

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