Discovery of the Gene Responsible for Gray Hair

While some consider gray hair a sign of beauty, style, and maturity, others combat it with various hair dyes, viewing it as a clear indication of aging. Regardless of personal opinions, scientists have for the first time identified a gene responsible for graying hair. According to Reuters, research on the DNA of over six thousand residents from five South American countries led to the identification of a gene linked to gray hair. Researchers state that graying is associated with a gene called 'IRF4', which regulates melanin, the pigment that determines hair, eye, and skin color. Andres Ruiz-Linares from University College London and one of the researchers of this study says that individuals with a specific variant of this gene are more prone to graying. Although this gene is a significant factor in hair color change, other factors such as stress and painful experiences can also contribute to sudden color changes. Given that people in various cultures spend substantial amounts on dyeing their hair and concealing white and gray hair, scientists believe that identifying this gene may help prevent graying. This research involved men and women from Brazil, Colombia, Chile, Mexico, and Peru, with participants having a mix of European, African, and Native American ancestry. Ruiz-Linares mentions that the gene causing premature graying is only found among individuals with European roots, which may explain why white hair is more common among Europeans than other races. This research also identified genes responsible for curly hair, beard thickness, eyebrow fullness, and connected eyebrows.