Taking L-methionine might help stop hair from going gray by protecting proteins in hair follicles, at least in lab tests.

Pro

Against

Evidence from Studies

Supporting (1)

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Senile hair graying: H2O2‐mediated oxidative stress affects human hair color by blunting methionine sulfoxide repair

Cross-Sectional Study

Human & In Vitro

2009 Jul

Contradicting (0)

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No contradicting evidence found

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Source Study

Senile hair graying: H2O2‐mediated oxidative stress affects human hair color by blunting methionine sulfoxide repair

Score: 20

DOI: 10.1096/fj.08-125435

Similar Assertions

Gray hair might happen because certain repair proteins are missing in the hair roots, so damage from oxidation can't be fixed properly.

76%

When certain parts of a hair color enzyme get damaged by oxidation, it doesn't work as well, which can lead to hair gradually losing its color.

73%