There's no exact cause known for the rise in cancers among young people, according to experts, but researchers are trying to figure it out.

Brad Arnold, the longtime frontman of rock band Three Doors Down, revealed he had been diagnosed with stage IV kidney cancer in May 2025. As news of his condition spread, fans began showing support and searching for updates about the Three Doors Down singer’s cancer battle and what it means for the band’s future.

Brad Arnold, the lead singer of the rock band 3 Doors Down, says he has been diagnosed with a form of kidney cancer.