Sludge

[Rjk]

It's quite likely that she's rhesus negative too, it's been reported that rh negative and redheaded women have a higher sex drive.

Any links to that research?

[Mrs Steve R]

Any links to that research?

I can't find where I first saw it but it's mentioned in this article about gingers, I will look through my millions of links later and see if I can find the one I read.
http://www.telegraph.co.uk/health-fi...-being-ginger/