Red Hair - recessive gene from Poland?

....Redheads constitute approximately four percent of the European population.[7] Scotland has the highest proportion of redheads, as 13 percent of the population has red hair and approximately 40 percent carries the recessive redhead gene.[8]
Ireland has the second highest percentage; as many as 10 percent of the Irish population have red, auburn, or strawberry blond hair.[9] It is thought that up to 46 percent of the Irish population carries the recessive redhead gene....

redheads sometimes need more drugs than other people.

redheads sometimes need more drugs than other people.

Sensitivity to pain

In people with red hair, the cells that produce skin and hair pigment have a mutated MC1R. Researchers have found that this mutation triggers the release of more of the hormone that stimulates these cells, but this hormone also stimulates a brain receptor related to pain sensitivity.[34]

Two studies have demonstrated that people with red hair have differential sensitivity to pain compared to people with other hair colours, but they differ as to the direction of the effect. One study found that people with red hair are more sensitive to thermal pain (a natural low vitamin K level is to blame for this)[35] while another study concluded that redheads are less sensitive to pain from electrical stimuli.

Researchers have found that people with red hair require greater amounts of anesthetic, however this is controversial and other research publications have concluded that women with naturally red hair require less of the painkiller pentazocine than do either women of other hair colours or men of any hair colour. A study showed women with red hair had a greater analgesic response to that particular pain medication than men.[36] A follow-up study by the same group showed that men and women with red hair had a greater analgesic response to morphine-6-glucuronide.[37]

Biochemistry and genetics

A close-up view of red hairThe pigment pheomelanin gives red hair its distinctive colour. Red hair has far more pheomelanin than other hair colours, but far less of the dark pigment eumelanin.

The genetics of red hair, discovered in 1997, appears to be associated with the melanocortin-1 receptor (MC1R), which is found on chromosome 16. Red hair is associated with fair skin colour due to low concentrations of eumelanin. This lower melanin-concentration has the advantage that a sufficient concentration of important Vitamin D can be produced under low light conditions. However, when the UV-radiation is strong (like in the regions close to the equator) the lower concentration of melanin leads to several medical disadvantages - one of them is the higher rate of skin cancer.

Red hair was thought to be a mark of a beastly sexual desire and moral degeneration.
red hair and green eyes were thought to be the sign of a witch, a werewolf or a vampire during the Middle Ages;

In modern-day UK, despite (or because of) being one of the places with the highest populations of redheads, the words "ginger" or "ginga" are sometimes derogatorily used to describe red-headed people, with terms such as "gingerphobia" (fear of redheads)[49] or "gingerism" (prejudice against redheads)[50] used by the media. Redheads are also sometimes referred to disparagingly as "carrot tops" and "carrot heads". "Gingerism" has been compared to racism, although this is widely disputed, and bodies such as the UK Commission for Racial Equality do not monitor cases of discrimination and hate crimes against redheads.[50] A UK woman recently won an award from a tribunal after being sexually harassed and receiving abuse because of her red hair;[51] a family in Newcastle upon Tyne, England, was forced to move twice after being targeted for abuse and hate crime on account of their red hair;[52] and in 2003, a 20 year old was stabbed in the back for "being ginger."

This prejudice has been satirised on a number of TV shows.

Films and television programmes often portray school bullies as having red hair;[56]

However, children with red hair are often themselves targeted by bullies; "Somebody with ginger hair will stand out from the crowd," says anti-bullying expert Louise Burfitt-Dons.

He goes on to say "redheads are most likely be successful in life." [57]

The only other possibility is

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