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A comment on Grey hair linked with increased heart disease risk in men.

Re:Grey hair linked with increased heart disease risk in men by wyldfire on Saturday April 08, 2017 @11:18AM (#14067315)
> The amount of grey hair was graded using the hair whitening score ... grade was determined by two independent observers.

I wonder how hard it would've been to use some simple analysis of a photograph of the hair.

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