Source: Allaboutvision.com (Brown eyes: All about brown eye color)
Source Link: https://www.allaboutvision.com/conditions/eye-color-brown.htm
Brown eyes are the most common eye color on the planet. However, the prevalence of brown eyes varies greatly depending on where you live. The majority of people in Africa and Asia have dark brown eyes. In the Middle East, dark brown eyes are also very common. Brown eyes are common in Europe, but their prevalence and color vary greatly from region to region.
Brown eyes, which include dark brown eyes, light brown eyes, and honey brown eyes, account for approximately 41% of the population in the United States. The prevalence is even higher if you include hazel eyes (also known as hazel brown eyes).
However, just because brown eyes are common doesn't mean they all look the same. The appearance of brown eyes varies greatly from person to person (even within a single shade).
Brown eyes are caused by a variety of factors.
There is only one type of eye color pigment, despite the fact that there are many different eye colors, including the less common blue and green eyes. The color of your eyes is determined by the amount of this pigment (called melanin) in your iris.
Blue eyes are those with very little melanin in the iris. Green, hazel, or light brown eyes have a bit more melanin. Medium or dark brown are those with a high concentration of melanin.
The color of one's eyes is a genetic trait. But, contrary to popular belief, predicting eye color from your family tree is more difficult than it appears.
In fact, studies show that up to 16 genes can affect eye color.
Brown eyes vary greatly in appearance from person to person (even within a single shade).
Brown eyes can be caused by a number of things.
Despite the fact that there are many different eye colors, including the less common blue and green eyes, there is only one type of eye color pigment. The amount of this pigment (called melanin) in your iris determines the color of your eyes.
Blue eyes are characterized by a lack of melanin in the iris. Eyes that are green, hazel, or light brown have a little more melanin. Those with a high concentration of melanin are medium or dark brown.
The color of one's eyes is determined by genetics. However, predicting eye color from your family tree is more difficult than it appears, contrary to popular belief.
What are the advantages of having brown eyes?
If you have brown eyes, you'll be pleased to learn that they have been linked to a number of health benefits.
Brown-eyed people may be less susceptible to certain diseases. Brown eyes, for example, appear to be less likely than light-colored eyes to develop age-related macular degeneration.
In addition, when compared to people with light blue eyes, people with brown eyes have a lower risk of type 1 diabetes and melanoma of the eye.
Furthermore, research from the National Hospital for Neurology and Neurosurgery in London suggests that people with brown eyes are less likely than their blue-eyed coworkers to develop hearing problems as a result of environmental noise pollution. The authors of the study believe that melanin pigment protects nerves in the brain from noise-induced damage.
But it's not all good news for brown-eyed people.
According to research conducted at the University of Pittsburgh, women with dark-colored eyes appeared to experience more pain during childbirth than mothers with light-colored eyes. Women with light-colored eyes also had lower levels of anxiety, depression, negative thoughts, and sleep problems than women with brown eyes.
Furthermore, Australian researchers discovered that people with dark brown eyes were more likely to develop cataracts than those with lighter eyes. If you have brown eyes, make sure to wear sunglasses that protect your eyes from UV radiation when you're outside. (Polarized sunglasses provide the most comfort in bright sunlight in most cases.)
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