编辑“︁口交”︁（章节）

===減低流產機會===
吮陽可能會降低流產的風險。因為吮陽會使女性跟伴侣的精液（內含蛋白質）接觸，誘導其產生免疫耐受，繼使流產的風險降低。雖然任何形式的精液接觸基本都會降低懷孕中的女性發生各種免疫障礙的風險，但口服精液並在胃腸道吸收之能使免疫耐受以最快的效率產生<ref>{{Cite journal|last=Meuleman|first=T.|last2=Baden|first2=N.|last3=Haasnoot|first3=G.W.|last4=Wagner|last5=Dekkers|first5=O.M.|last6=le Cessie|first6=S.|last7=Picavet|first7=C.|last8=van Lith|first8=J.M.M.|last9=Claas|first9=F.H.J.|year=2019|title=Oral sex is associated with reduced incidence of recurrent miscarriage|url=https://linkinghub.elsevier.com/retrieve/pii/S0165037818302183|journal=Journal of Reproductive Immunology|doi=10.1016/j.jri.2019.03.005|access-date=2019-04-26|archive-date=2019-04-10|archive-url=https://web.archive.org/web/20190410103524/https://linkinghub.elsevier.com/retrieve/pii/S0165037818302183|dead-url=no}}</ref><ref name="pmid10706945">{{cite journal |vauthors=Koelman CA, Coumans AB, Nijman HW, Doxiadis II, Dekker GA, Claas FH |title=Correlation between oral sex and a low incidence of preeclampsia: a role for soluble HLA in seminal fluid? |url=https://archive.org/details/sim_journal-of-reproductive-immunology_2000-03_46_2/page/155 |journal=Journal of Reproductive Immunology |volume=46 |issue=2 |pages=155–166 |date=March 2000 |pmid=10706945 |doi=10.1016/S0165-0378(99)00062-5}}</ref><ref name=NewScientist>{{cite news | last=Fox | first=Douglas | title=Gentle Persuasion | publisher=''[[New Scientist]]'' | date=2002-02-09 | accessdate=2007-06-17 | url=http://www.newscientist.com/article/mg17323294.200-gentle-persuasion.html | archive-date=2015-06-10 | archive-url=https://web.archive.org/web/20150610212903/http://www.newscientist.com/article/mg17323294.200-gentle-persuasion.html | dead-url=no }}</ref>。相關研究可能包括一些混淆变量在內，例如經常從事口交和吞嚥精液的女性也可能更頻繁地從事性交。但研究者指出，無論是通過哪種方式接觸精液，「數據仍然壓倒性地支持所有研究背後的理論——反復接觸精液能使產婦產生免疫耐受，繼使懷孕更為安全<ref name="NewScientist"/><ref name=SeminalPriming>{{cite journal |vauthors=Robertson SA, Bromfield JJ, Tremellen KP |title=Seminal 'priming' for protection from pre-eclampsia-a unifying hypothesis |journal=Journal of Reproductive Immunology |volume=59 |issue=2 |pages=253–265 |date=August 2003 |pmid=12896827 |doi=10.1016/S0165-0378(03)00052-4}}</ref>。 」