Male lactation
Production of milk (
History
Male lactation was of some interest to
It is well known that in the males of all mammals, including man, rudimentary mammae exist. These in several instances have become well developed, and have yielded a copious supply of milk. Their essential identity in the two sexes is likewise shown by their occasional sympathetic enlargement in both during an attack of the measles.[2]
Darwin later considered the nearly perfect function of male nipples in contrast to greatly reduced structures such as the
Evolution and biology
Male mammals of many species have been observed to lactate under unusual or pathogenic conditions, such as extreme stress, castration, and exposure to
Nonhuman animal male lactation
The phenomenon of male lactation occurs in some species, notably the
Human male lactation
Spontaneous production of milk not associated with childbirth, known as
See also
- Galactagogue
- Intersex
- LGBT reproduction
- Milking the bull, a proverb that refers to the act of milking a male animal
- Male egg
- Male pregnancy
References
Citations
- ^ Voyage de Humboldt et Bonpland; 1-3. Voyage aux régions équinoxiales du Nouveau Continent : fait en 1799, 1800, 1801, 1803 et 1804. Tome 1 / par Al. de Humboldt et A. Bonpland; rédigé par Al. de Humboldt; J. Smith (Paris), 1814-1825, p. 376, (Online at gallica)
- ^ Descent of Man, Chapter I
- ^ Descent of Man, Chapter VI
- PMID 19100649.
- S2CID 31237459.
- PMID 6420385.
- PMID 29372185.
- S2CID 231755160.
Sources
- Angier, Natalie (24 February 1994). "Some Male Bats May Double as Wet Nurses". The New York Times. Retrieved 3 December 2013.
- Cr. J. Covey, Francis, Charles M., et al.; "Lactation in Male Fruit Bats," Nature, 367:691, 1994.
- Fackelmann, K.A.; Science News, 145:148, 1994.
- Anomalies and Curiosities of Medicine G.M. Gould and W.L. Pyles
