Posted by: tiffanyakraus | November 16, 2015

A Pair of Brown Eyes

If envy is red and doubt is black then happiness is brown. I looked from the little brown stone to the tiny brown freckle to her huge brown eyes.

Annabel Pitcher

brown eyeWith over 7.3 billion people in the world, around 3.63 billion of them have brown eyes…almost 50%! Once, scientists believed that a single gene decided if a person’s eyes were brown or not. We now know several genes control eye color along with skin and hair color. As we learned in my previous blog, the state of the OCA2 gene that codes the P protein is the biggest factor in eye color. High levels of the P protein are associated with brown eyes. The P protein itself is involved in producing melanin. Other genes including TYRP1 and ALC4A5 also influence the amount of melanin a person has.

Studies about eye color have turned up all kinds of interesting facts and tidbits. It is more likely that brown eyed people (especially men) will be perceived as more trustworthy and dominate than their pale eyed companions. Several reasons for this might be true. A slim possibility is a genetic link between certain facial structures and brown eyes. With so few genes controlling eye color, this might be a stretch. A more likely link is purely social.

The authors of the above study done at the Czech Republic’s Charles University believe the correlations stem from brown eyed people being treated more adult-like in infancy and adolescence than their blue eyed peers. They suggest people with blue eyes are treated like children for longer because blue eyes are associated with infants whose melanin hasn’t completely developed in the eyes. In the minds of others, this causes brown eyed people to seem more adult-like or trustworthy and dominate.

Regardless of what one believes, brown eyes can be enchanting in their depths and shades. Go out and see for yourself. A pair shouldn’t be too hard to find.


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About the author: Tiffany Kraus is a territory sales manager for Amcon Labs who writes in her spare time.  For medical advice please ask a medical professional.

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