Only 8 Percent of the World’s Population Has Blue Eyes. Genetically, very little melanin gives blue eyes, while lots of melanin gives brown eyes.
New research shows that people with blue eyes have a single, common ancestor. In fact, scientists have tracked down a genetic mutation that took place 6,000-10,000 years ago and is the cause of the eye color of all blue-eyed humans alive on the planet today.
Blue eyes are most common in Europe, especially in Scandinavian regions such as Finland, Sweden and Norway. North Eastern Slavic regions also have the blond hair and blue eyes in their genetics, countries such as Poland, Ukraine, Russia and Belarus.
Blue eyes are indeed becoming less common in the world. One study showed that about 100 years ago, half of U.S. residents had blue eyes. Nowadays only 1 in 6 does.
Comparatively, both men and women found blue to be the most attractive eye color and the photos underneath are a true testament to this fact.
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