"Bad Obsession" is a song by Guns N' Roses. It was written by Axl Rose and Slash. The song is about tackling drug abuse and addiction, which had haunted the band since they had become famous. The song appears on the album Use Your Illusion 1 as track 7, and also appears in the Use Your Illusion 1 DVD Live From The Tokyo Dome as song number five. Michael Monroe, former lead singer of Hanoi Rocks and a big influence on Guns N' Roses, plays the harmonica and tenor saxophone on the studio version, which is 5:28 long.