Red hair, the least common of all natural hair colorations, accounts for only about two percent of the world's population. This fiery hue, setting its bearers apart, has been a source of both fascination and prejudice throughout history, with its rarity and unique charm undoubtedly contributing to its distinctive status. From the highlands of Scotland to the heartland of the United States, the occurrence of red hair quantifies the remarkable combination of our shared genetic heritage and regional variations.
Ireland takes the lead with approximately 10% of its population possessing natural red hair, making it the country with the highest concentration of redheads globally.
Following closely behind is the United Kingdom, hosting 8.5% of its populace with naturally red-hued tresses. This relatively high frequency could be correlated with the region's frequently overcast weather, which matches redheads' heightened sensitivity to sunlight and their bodies' enhanced ability to generate vitamin D.
The United States, despite being a blending pot of various ethnic groups and races, holds a notable 4% of redheads, only half as many as the UK.
Finally, the Netherlands shows a significant drop with just 2% redheads, aligning closer with the global average.
