Steatopygia is an inherited condition of the Khoisan peoples of southern Africa. Charles Darwin wrote about the Khoisan in The Descent of Man in 1882, commenting that their steatopygia evolved through sexual selection in human evolution, and that "the posterior part of the body projects in a most wonderful manner".
- Charles Darwin (1882). The Descent of Man and Selection in Relation to Sex. London: John Murray. p. 578.