will.i.am has spoken about his battle with ADHD during his life and career. The Voice UK coach explained that he constantly struggles to concentrate on different tasks due to his Attention Deficit Hyperactivity Disorder. "I have ADHD. I'll admit it," he is quoted as saying in The Mirror. "Did you hear about the elephant that got into that fight with a gorilla? Sorry, that's my ADHD kicking in. "I've got all this stuff in my head at the same time as I'm doing stuff and I don't know how to stop or slow down. But it's all good because I know how to control it."
