Is Nirvana's "Heart-Shaped Box" (HSB) about an abortion?
(1) Unofficially, Kurt Cobain (KC) seemed to have had a fascination with fetal containers. See, e.g., the "In Utero" album title.
(2) He was interested in abortifacients. From Wiki:
"The herb pennyroyal is sometimes used as an abortifacient. In Cobain's Journals, which was published posthumously in 2002, there is an entry where he explains the tracks on In Utero. The explanation given for 'Pennyroyal Tea' simply reads: 'herbal abortive... it doesn't work, you hippie.'"
(3) Courtney admits that HSB is "about her vagina".
("Courtney Love Tells Lana Del Rey That 'Heart-Shaped Box' Is About Her Vagina," Rolling Stone, Jul. 30, 2010, <http://www.rollingstone.com/music/news/courtney-love-tells-lana-del-rey-that-heart-shaped-box-is-about-her-vagina-20120730>.)
(4) Amongst the interpretations floating around for "meat eating orchid" is:
"Orchids are known for their vaginal appearance. The Venus Flytrap is a carnivorous plant that derives its name from Venus the Roman goddess of love because of its similar appearance to a vagina. Meat (especially when placed next to the orchid) in this case could be a phallic image."
(5) KC was obsessed with the notion that he'd father a "flipper-baby" and tried to
talk Courtney into aborting the one that they actually did have. (See Charles R. Cross, Heavier Than Heaven: A Biography of Kurt Cobain, pp. 230-231, <http://books.google.com/books?id=dc-S-FAM4QoC&pg=230>.)
(6) Re: "Pisces": In a brief, deranged note mentioning "bloody cum," "Satan," drugs, and "abortion," KC "signed the letter with a fish". (Cross, op. cit., p. 218, <http://books.google.com/books?id=dc-S-FAM4QoC&pg=218>.)
(7) HSB was "originally titled ...'Heart-Shaped Coffin'". (Cross, op. cit., p. 278, <http://books.google.com/books?id=dc-S-FAM4QoC&pg=277>.)
(8) Re: "eat your cancer"...why mention "cancer" if it's about abortion? Is it code? During the 1980s and 1990s, the "Abortion–breast cancer hypothesis" was big headlines - as well as something that certain abortion clinics were mentioning, as a possible "side effect" of abortion, to women that they "counseled." KC was fearful of consequences - pregnancy for sex; mutant babies for birth; cancer for abortion; etc.