According to scientists at the University of California in Irvine, a variant of the dopamine-receptor gene may be associated with longevity. Their findings, published in the Journal of Neuroscience, show that the genetic variant called the dopamine receptor 4 (DRD4) 7-repeat allele, or DRD4 7R allele for short, appears in significantly higher rates in people more than 90 years old. DRD4 7R allele is part of the dopamine system, which facilitates...
