What Percentage Of The World's Population Have Blue Eyes

So, there I was, sitting on a bustling café terrace in Lisbon, sipping my espresso and people-watching. You know how it is, you're just minding your own business, enjoying the sun, when suddenly you realize that out of the dozen or so people around you, only one has blue eyes. Now, I'm not saying I was counting or anything, but it did make me wonder - just how rare are blue eyes, really?

I mean, it's not like we're talking about, say, purple eyes or something. Blue eyes are pretty common where I come from, but clearly not so much in Portugal. So, I decided to do a little digging and find out what percentage of the world's population actually has blue eyes. And you know what? The results might just surprise you!

Blue Eyes: A Genetic Oddity

Alright, let's get a bit scientific here. Blue eyes are the result of a genetic mutation that occurred around 6,000 to 10,000 years ago. This mutation affects the OCA2 gene, which is responsible for producing melanin in the iris of the eye. When there's less melanin, the eyes appear blue. Pretty neat, huh?

Now, here's where it gets interesting. This mutation is most commonly found in Northern European populations. In fact, it's estimated that around 80% of people in Scandinavia have blue eyes. But as you move south and east, the prevalence of blue eyes starts to drop significantly.

Blue Eyes Around the World

So, you're probably wondering, "Okay, but what about the rest of the world?" Well, let's take a little globe-trotting tour, shall we?

Europe: As we've established, blue eyes are quite common in Northern Europe. But head south to the Mediterranean, and you'll find that blue eyes are much less common. In Spain, for instance, only about 10% of the population has blue eyes. And in Greece? A mere 5%.

Asia: Blue eyes are incredibly rare in Asia. In fact, you're more likely to find a yeti than a person with blue eyes in many Asian countries. The exceptions are places like Mongolia and the Siberian regions of Russia, where some populations have a higher prevalence of blue eyes due to historical mixing with Northern European populations.

Africa: Blue eyes are virtually non-existent in Africa. The only place you might find them is among the Berber people of North Africa, who have some historical ties to European populations.

North America: In the good ol' US of A, about 33% of the population has blue eyes. But this varies widely depending on the region. In places like Maine, over 50% of the population has blue eyes, while in Hawaii, it's less than 10%.

South America: Blue eyes are quite rare in South America, with the exception of Argentina, where about 15% of the population has blue eyes due to historical European immigration.

The Big Reveal

Alright, enough suspense. So, what percentage of the world's population has blue eyes? Well, according to various studies, it's estimated to be around 8-10%. Yes, you read that right. Less than 10% of the world's population has blue eyes!

Now, I don't know about you, but I found that figure pretty surprising. I mean, where I come from, blue eyes are practically the norm. But when you think about it, it makes sense. After all, blue eyes are a genetic mutation that's most common in a relatively small part of the world.

So, the next time you're out and about, take a look around. You might just appreciate those blue-eyed folks a little more, knowing that they're part of a pretty exclusive club!