Redheads are harder to sedate than any other group. Using common anesthetics they require 20% more anesthesia. They also have a high tolerance for pain than
normal people other types. This is because the Melancortin 1 receptor mutation that gives them red hair also triggers the excess release of Pheomelanin, which among other things stimulates a brain receptor related to pain sensitivity.
Which now explains how my Irish Gran could pick up red hot cinders spat from the fire (with her bare hands) before throwing them back onto it again. It also explains why the fighting Irish and the Scots were so hard to knock down… It is staggering to read that research reveals that there are 20MILLION red hair gene carriers in the UK. Even more staggering, is that Yorkshire is as redheaded as Ireland (I was born in County Durham, and originally dark Auburn, until nature took its course)! Map produced by the UK’s DNA showing where redheaded genes are concentrated. In Mediaeval times, red hair was associated with moral degradation, and intense sexual desire. Redheads with green eyes were regarded as vampires, werewolves and witches. The Spanish inquisition singled them out for persecution, believing their hair to be a sure sign that they stole the fires of hell.
Through personal experience I can state that redheads are my Kryptonite, and with that I will bid you all a goodnight!