By Elizabeth Armstrong Moore - Published July 01, 2015 Newser
Is it mere coincidence, or do people with blue eyes really run a higher risk of being alcoholics? A new study out of the University of Vermont suggests that the link not only exists, but it appears to be a genetic one.
Reporting in the American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, the researchers find that among European-Americans, those with light-colored eyes—described as ones that are green, gray, and brown in the center—have higher rates of alcohol dependency than Euro-Americans with dark brown eyes; that link is strongest in blue-eyed people.
It's not the first time the eye color-alcohol link has been found: A 2000 study arrived at a similar conclusion, noting that among one sample set of women, dark-eyed females averaged 4.91 drinks in the last month to light-eyed females' 5.78.
The researchers say these findings could help us better understand the roots of not only alcoholism but other psychiatric illnesses as well.