Extremely Rare But Interesting Human Body Features

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Two Different Colored Eyes

Two Different Colored Eyes
Caused by excessive or a lack of melanin, this condition is called heterochromia irides and only around 6 out of every 1,000 people are born with it. Actress Mila Kunis and the late, great singer David Bowie are notable examples.

Curly Hair

Curly Hair
A funny anomaly is that people with straight hair often wish it were curly, whereas curly-haired people will often straighten it. But the latter group should take pride in their natural curls: only around 11% of the world population has it!

A Cleft Chin

A Cleft Chin
A trait that is inherited, a dimpled chin is most common among people of European and Middle Eastern ancestry. John Travolta has a prominent cleft while Eminem’s is more subtle.

 

 

Double Eyelashes

Double Eyelashes
This unusual body quirk is known as distichiasis and less than 5% of the population has it. Elizabeth Taylor was one such lucky individual, and it contributed to her beauty. For most people, there are no medical complications associated with it, although a few experience irritation to the eyes. Fun bonus fact: dogs can also have double eyelashes!

 

Photic Sneeze Reflex

Photic Sneeze Reflex
This unusual condition involves uncontrollable sneezing in response to bright lights. It is not well understood why it occurs, but around 18-35% of the population suffers from it. How about you? Does the sun make you sneeze?

 

 

Short Sleepers

Short Sleepers
A small percentage of the population possesses a gene that allows them to need far less sleep than the average person. More time for late night video games, eh? The effected gene is known as BHLHE41 and former UK Prime Minister Margaret Thatcher was one such person who had it.

Blue Eyes

Blue Eyes
Only around 8% of the world’s population possesses baby blues. This genetic mutation is a lot more recent than you might think. It is estimated that the first humans with blue eyes emerged between 6,000 and 10,000 years ago.

 

 

Super Color Vision

Super Color Vision
Most people have the ability to see around a million shades of colors, although colorblind people only see around 100,000 shades. But on the opposite end, people with a condition known as tetrachromacy can differentiate between 99 million shades of color!

 

 

Natural Blond Hair

Natural Blond Hair
You are not reading this incorrectly! While a lot of babies are born blond, for the majority their hair darkens as they grow up. As a result, it is estimated that only between 2-16% of the adult population has fair hair, which means very few of us are actually victims of those tired “dumb blond” jokes.

 

Red Hair

Red Hair
If there are few real blonds in this world, redheads are even a greater rarity. Less than 2% of the entire human race is blessed with red hair. Gingers of the world, rejoice!

 

(Source: BrainBerries)

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