mechanistic
Analysis v1
Strong Support
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.
20
0
Evidence from Studies
Supporting (1)
20
Community contributions welcome
20
Senile hair graying: H2O2‐mediated oxidative stress affects human hair color by blunting methionine sulfoxide repair
Cross-Sectional Study
Human
2009 JulThe study shows that damage to a key part of the hair color enzyme—caused by buildup of hydrogen peroxide and failure to repair it—leads to gray hair, which matches the claim.
Contradicting (0)
0
Community contributions welcome
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.