View gallery Image Credit: Getty Images Brad Arnold, the lead vocalist of the rock band 3 Doors Down, died at the age of 47, the band announced on February 7, 2026. Arnold had been battling cancer. As his industry peers and fans grieve his death, many also want to know the type of cancer that Arnold was living with toward the end of his life. In its heart-wrenching announcement confirming Arnold's death, the band wrote that the "Kryptonite" singer "passed away peacefully, surrounded by loved ones, in his sleep.