Friends Have Similar DNA
It’s totally true, best friends often times have similar DNA. According to a study conducted by Yale University and the University of California at San Diego, good friends are often genetically similar and share as much as one percent of the same gene variants. To put that into perspective, a little more, your best friend genetically is in comparison of a fourth cousin.
The study was published in the July edition of the Proceedings of National Academy of Sciences and looked at 1.5 million gene variants from the Framingham Heart Study. Participants were predominately from European decent and researchers compared pairs of friends with pairs of strangers.
In response to the study, Nicholas Christakis, professor of sociology, evolutionary biology, and medicine at Yale told Time Magazine, “This gives us a deeper accounting of the origins of friendship. Not only do we form times with people superficially like ourselves, we form ties with people who are like us on a deep genetic level. They’re like our kin, though they’re not.”