My mum is 70 years old and only start sporting white hairs for the first time. Is this common in red heads?

So yeah, my mum is a red head and only last year at the age of 69, she started sporting some white hairs. Even now, her hair is almost completely red. Her sister, who is a few years older, is also a redhead and only has a few greys. Is this common in red heads? I hear some people grey as early as their 30s.... show more So yeah, my mum is a red head and only last year at the age of 69, she started sporting some white hairs. Even now, her hair is almost completely red. Her sister, who is a few years older, is also a redhead and only has a few greys.

Is this common in red heads? I hear some people grey as early as their 30s. There's something about red hair that keeps it the way it is.
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