There's more research on the variations in human hair color than you might expect, and the science makes it clear that crimson locks are not becoming increasingly rare, nor will they disappear any time soon. It's a trait that dates to prehistory.
Here's why. Red hair is caused by a recessive gene and it's not possible for this gene to simply die out. Even if there were no more redheads, people would still carry the recessive gene and that gene can appear at any time. Redheads may become rarer in the future, but they aren't going anywhere.
Lifespan: up to 20 years in captivity, 5-10 years in the wild. Special Adaptations: Males have an elaborate courtship dance where they throw back their heads, almost touching their tail!
Because it's a recessive trait, red hair can easily skip a generation. It can then reappear after skipping one or more generations if both parents, no matter their hair color, carry the red hair gene.
How common is strawberry blonde hair? Having natural red hair is rare (like, two percent of the population rare), so coming across someone with natural strawberry blonde hair isn't common.
What percentage of the global population has red hair? About 1-2% of the global population has red hair.
Since red hair is a recessive trait, the children of two redheaded parents will almost always be redheaded as well. In contrast, if only one parent is redheaded and the other has brown hair, there is a higher chance that the children will display the dominant trait and will have brown hair.
For a recessive trait to be expressed the individual must be pure breeding, hence two red heads can not produce any other colour in a child.
Sex Researcher Professor Dr Werner Habermehl said: “The sex lives of women with red hair were clearly more active than those with other hair colour, with more partners and having sex more often than the average. The research shows that the fiery redhead certainly lives up to her reputation.”
Redheads feel hot and cold temperatures more severely than anyone else. In 2005, the University of Louisville discovered this hidden gift and hypothesised that the redhead gene, MC1R may cause the human temperature-detecting gene to become over-activated, making redheads more sensitive to thermal extremes.
Having red hair and blue eyes is the rarest hair/eye color combination possible. The odds of a person having both of those recessive traits is around 0.17%. Instead, most redheads have brown, hazel or green eyes, according to Medical Daily.
Research has shown that people with red hair perceive pain differently than others. They may be more sensitive to certain types of pain and can require higher doses of some pain-killing medications. However, studies suggest that their general pain tolerance may be higher.
According to an article by evolutionary biology professor Mark Elgar, PhD, of the University of Melbourne, blue-eyed redheads are the absolute rarest, with 0.17% of the population having that combination of hair and eye color.
As a group, redheads seem to be more likely to develop certain health conditions and have certain health risks. These include: Increased skin cancer risk. Altered sensitivity to pain.
Redheads Look Older Than They Are
That wasn't because redheads had more wrinkles, which you might guess since they're more prone to sun damage. The researcher showed the MC1R gene variant correlated to thinning lips, sagging skin along the jawline, and other visible signs of aging.
A redhead of African descent is pretty rare. Except when people are of mixed ancestry, red hair in Africans is usually caused by a kind of albinism. When people think of albinism, they may picture people with white hair, pale skin and pink eyes.
Contrary to what many people assume, redheads did not originate in Scandinavia, Scotland or Ireland, but in central Asia. Their coloring is due to a mutation in the MC1R gene that fails to produce sun-protective, skin-darkening eumelanin and instead causes pale skin, freckles and red hair.
Previous studies had shown that redheads inherit two versions of the MC1R gene that leads to red hair – one from their mum and one from their dad. Although almost everyone with red hair has two copies of the red-haired version of MC1R, not everyone carrying two red-haired versions is a redhead.
"Go gingers," he added. It's a little-known fact that all three of Princess Diana's siblings — Lady Jane Fellowes, Lady Sarah McCorquodale and Charles, 9th Earl Spencer — have naturally red hair.
Ireland has the highest number of red-haired people per capita in the world, with the percentage of those with red hair at around 10%. Great Britain also has a high percentage of people with red hair.
One popular myth is that hair loss in men is passed down from the mother's side of the family while hair loss in women is passed down from the father's side; however, the truth is that the genes for hair loss and hair loss itself are actually passed down from both sides of the family.
Did you know that red hair is a genetic mutation? Both parents must be carriers of the mutated MC1R gene to be able to produce redhead offspring.
And when you meet a red head with blue eyes, you are looking at the rarest colour combination of all for human beings. Around 17 per cent of people have blue eyes, and when combined with 1-2 per cent having red hair, the odds of having both traits are around 0.17 per cent.