# glutathione

CEFR C1 · Noun

Source: https://englishreference.com/word/glutathione
Updated: 2026-06-22

## Definition

a natural substance in your body that helps protect cells from damage. It is a powerful antioxidant that helps your body get rid of harmful chemicals.

For teachers: a tripeptide composed of three amino acids that acts as a potent endogenous antioxidant. It plays a critical role in detoxification and the maintenance of cellular health.

## Examples

- The body produces glutathione to help fight free radicals.
- Many health supplements claim to boost glutathione levels to improve the body's ability to process toxins.
- Research suggests that a deficiency in glutathione may contribute to oxidative stress, which is implicated in the pathogenesis of various chronic diseases and the aging process.

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