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

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

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

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

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

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Gray hairs have more damaging chemicals like hydrogen peroxide and less of the protective enzymes that normally keep those chemicals in check.

70%