Task: Question Answering
Input (English): Passage: Blood Sugar Sex Magik was written at a more rapid pace than the band's previous album. Before the Chili Peppers relocated into the mansion, Frusciante and Kiedis collaborated at each other's homes, in order to arrange song structures and guitar riffs. The band then presented ideas to Flea and Smith, and as a whole, they decided on what they would use for the bass, guitar, vocal and percussion ensembles.
Kiedis focused lyrically on sexual references and innuendos, as they were frequently on his mind. Songs such as "Suck My Kiss", "If You Have to Ask", "Sir Psycho Sexy", "Give It Away" and "Blood Sugar Sex Magik" all contained various sexual links, with lyrics like "A state of sexual light / Kissing her virginity / My affinity" and "Glorious euphoria / Is my must / Erotic shock / Is a function of lust." The concept behind "The Greeting Song" was a request that Rubin had made. Rubin asked Kiedis to write a song solely about girls and cars. Although Kiedis disliked the concept, he wrote the song as Rubin requested and ended up disliking almost every one of the lyrics' aspects. Kiedis also began writing songs about anguish, and the self mutilating thoughts he experienced thanks to his addiction to both heroin and cocaine; he believed that his life had come to its lowest point under a bridge in downtown Los Angeles. Over a month later, Rubin stumbled upon a poem that eventually become the lyrics to "Under the Bridge". Also, he suggested that Kiedis would show it to the band's other members. However, Kiedis was apprehensive because he thought the lyrics were "too soft" and different from the band's style. After singing the verse to Frusciante and Smith, the band started working on the song's structure the next day. Both Rubin and Kiedis worked several hours on arranging the song's chords and melodies until they both accepted it as complete. Frusciante ultimately chose the chords he played in the intro so it could balance out the song's depressing atmosphere: "my brain interpreted it as being a really sad song so I thought if the lyrics are really sad like that I should write some chords that are happier." "Naked in the Rain" was among the first songs that the band wrote for the album. The Chilli Peppers even played once at the end of the Mother's Milk Tour in 1990, while the intros for "The Greeting Song" and "Sir Psycho Sexy" were also teased during the end of that tour; however, neither song was completed or had lyrics. 
Question: What is the name of the person whose addiction to both heroin and cocaine contributed to the self-mutilating thoughts he experienced?
Output (English): Kiedis.