Two of my sons are red headed . 3 of my 4 grandkids are red headed. The 4th is a strawberry blond.
My dad looks just like his great uncle...lots of Scots blood in this side of the family...after all they are Donaldsons intermarried with Wallaces...somewhere back there a healthy dose of Viking blood, no doubt.
I read just the opposite in Readers Digest...if you have read hair you actually need more pain killers than average. I have red hair and I can vouch for that. When ever I go to the dentist, they get out the elephant darts. I never get bit by mosquitos because I feel them and kill them 80% of the time before they get me.