Male pregnancy is the carrying of one or more embryos or fetuses by the male of any species inside their bodies. The majority of all pregnancies in the animal kingdom are carried by female organisms. In most heterogamous species, the males produce the spermatazoa and rarely host the zygote.
The Syngnathidae family of fish includes seahorses, the pipefish, and the weedy and leafy sea dragons. This family of fish have the unique characteristic where females lay their eggs in a brood pouch on the male's chest, and the male then fertilizes and incubates the eggs. It is the only family in the animal kingdom to which the term "male pregnancy" has been applied.[1]
British physician Robert Winston speculates that it may be possible to surgically induce abdominal ectopic pregnancy in men.[2] In his book The IVF Revolution, Winston speculates that an embryo could be implanted in a man's abdomen—with the placenta attached to an internal organ such as the bowel—and that the baby would later be delivered by Caesarean section. However, other experts expressed great concerns about the safety of such a procedure.
Some intersex people with XY chromosomes develop entirely female bodies and, if the individual develops a uterus, in vitro fertilization is possible.[3] This may also occur in animals.
Some female-to-male transsexuals who interrupt hormone treatments can become pregnant, while still identifying and living as male—this is possible for individuals who still have functioning ovaries.[4] One example is Matt Rice, a transman who is the former partner of writer Patrick Califia. Rice bore a child by artificial insemination.[5] Although the individual is genetically and physiologically female, from an identity standpoint this may be considered by some a "male pregnancy".
Thematically, pregnancy can be related to issues of parasitism and gender. Some science fiction writers have picked up on these issues, in "cross-gender" themes—e.g., Octavia Butler's Bloodchild. Lois McMaster Bujold's Ethan of Athos features an all-male society in which men use artificial wombs, but experience many of the psychological effects of pregnancy (anticipation, anxiety, etc.). In Marge Piercy's feminist utopian novel Woman on the Edge of Time, neither men nor women get pregnant, but men may take drugs to lactate and nurse the infant; the experience of "pregnancy" and the woman-only experience of nursing were sacrificed for gender equality.[6] In the Internet comedy series Red vs. Blue, the character of Template:Rvbchar is impregnated by a parasitic embryo from an alien creature. Roger Corman's B-film Night of the Blood Beast [2] (1958) featured a male scientist being impregnated by an alien. Sheri Tepper uses male pregnancy as a form of political commentary in The Fresco when intergalactic peace officers take politicians at their literal word that all life is sacred despite any personal drawbacks.
Male pregnancy is frequently seen in fan fiction (such as famous actors) such stories may be denoted as "mpreg", a term coined by two writers under the pseudonyms of Taleya Joinson and Texas Ranger, who created and maintained what is believed to be the first fan fiction archive dedicated to stories of this genre in 1998.[7] The pregnancies may be the result of advanced medical technology (e.g., experiments on Mulder from The X-Files), mystical pregnancies, magic or are unexplained.
Various mythologies have featured male characters birthing, but such events typically either take place in an entirely different fashion than an ordinary female pregnancy, such as Athena springing fully-formed from Zeus's forehead, or Dionysius being born from his thigh. Male mythological figures may also become pregnant when rendered female in some way, such as the shapeshifter Loki turning into a mare to distract a stallion and ending up giving birth to Sleipnir.
Two comedy films centered around the theme of such an event in humans, Rabbit Test (1978) and Junior (1994), have been released. The latter's attempts are somewhat scientifically feasible; the former does not address the matter. Television episodes and series have featured such pregnancies as a result of alien-human interaction, including Futurama, American Dad!, Alien Nation, Dilbert and the episode "Unexpected" of Star Trek: Enterprise, as well as in the computer game The Sims 2, "which in Strangetown men can be gay and have babies".There are also rumors and hoaxes[8] on the subject for actual achievements.
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