English News in Levels

Scientists Discover That Human Hair Grows by 'Pulling,' Not Pushing, Rewriting the Textbooks

For decades, textbooks taught that hair grows because cells at its base divide and push it upward. New 3D imaging by researchers at Queen Mary University of London and L'Oreal reveals hair is instead pulled upward by coordinated, spiraling cell movements in the outer root sheath, a discovery that could reshape treatments for hair loss.