If you love to crank "Brown Eyed Girl" by Van Morrison, rejoice — if your peepers are the right color. Various studies have shown that when exposed to a loud environment, brown-eyed people have less hearing loss than those with blue eyes, WebMD reports. Brown-eyed people have more melanin — the pigment that provides the color of skin, hair and eyes — in their eyes and ears. The extra melanin could give them a bit more protection when noise levels are high.
Blue-eyed people are more likely to drink alcohol and might have a higher risk of becoming addicted, according to a 2015 study published in the American Journal of Medical Genetics: Neuropsychiatric Genetics (Part B). Researchers found that those with light-colored eyes had a higher incidence of alcohol dependency than those with dark-brown eyes, and the strongest tendency was among blue-eyed individuals.
Stroke risk and problems with nervous system
The condition known as anisocoria occurs when a person has pupils of different sizes, according to the American Academy of Ophthalmology. Many people have different-sized pupils without any health repercussions; however, this condition can be a symptom of serious health issues with the nervous system, as well as affect your risk of stroke and viral infections.