Njengokuqinisekisa "ubuzwe" bokukhangwa ubungqingili, izishoshovu ze-LGBT zivame ukubhekisela kukho ukutadisha isazi sezinzwa uSimon LeVay wango-1991, lapho kuthiwa wathola khona ukuthi i-hypothalamus yabesilisa “abanobungqingili” ilingana neyabesifazane, okuthiwa ibenza ongqingili. Yini ngempela ayithola uLeVay? Angakutholanga ngokuqinisekile kwakuwukuxhumana phakathi kwesakhiwo sobuchopho kanye nemikhuba yocansi. 

Iningi lokuqukethwe ngezansi lishicilelwa embikweni wokuhlaziya. "I-rhetoric of theungqedi lobungqingili ngenxa yamaqiniso esayensi". doi:10.12731/978-5-907208-04-9, ISBN 978-5-907208-04-9

Esinye seziqubulo zenhlangano i- "LGBT" isitatimende sokuthi ingxenye yabantu abakhangwa abobungqingili kuthiwa yi-10% - okusho ukuthi, njalo eshumini. Eqinisweni, ngokwezifundo ezinkulu zesimanjemanje ezenziwa e-United States kanye namazwe e-European Union (okungukuthi, emazweni lapho ubungqingili busekelwa ngokugcwele futhi buvikelwa yimishini yombuso), inani labantu abazibiza ngokuthi bangongqingili liyahlukahluka lisuka ku- <1% lize lifike kwabathathu %.