"Lithium" is a song by the American grunge band Nirvana, written by frontman Kurt Cobain. The name of the song is often attributed to the usage of lithium salts as mood stabilizers. Because of this the lyrics are often interpreted as describing bipolar disorder. Cobain is said to have had bipolar disorder, which may have led to the writing of the song "Lithium". Still, there is much disagreement about the exact meaning and interpretation of it.
In the Nevermind press kit .