Foreskin: Difference between revisions

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The foreskin is highly vascularized. The high rate of blood flow helps to prevent infection.<ref name="fleiss-hodges-vanhowe1998"/>
The foreskin is highly vascularized. The high rate of blood flow helps to prevent infection.<ref name="fleiss-hodges-vanhowe1998"/>


Although claims have been made that the presence of the foreskin increases the risk of infection with [[Circumcision and HIV|human immune deficiency virus]] ([[HIV]]), that is not correct. The claims are based on the reported findings of three randomized clinical trials (RCTs) that were carried out more than a decade ago in Africa. Boyle & Hill (2011) have shown these RCTs to be have significant methodological flaws and statistical errors that render their claims invalid.<ref name="boyle-hill2011">{{BoyleGJ HillG 2011}}</ref> [[HIV#Population-based_studies| Two massive population studies]] published in 2021 found that [[circumcision]] provided no protective effect.
Although claims have been made that the presence of the foreskin increases the risk of infection with [[Circumcision and HIV|human immune deficiency virus]] ([[HIV]]), that is not correct.<ref name="renaud2026">{{REFweb
|title=Immunological and Microbial Functions of the foreskin in sexually transmitted infections
|url=https://www.researchgate.net/publication/403975444_Immunological_and_Microbial_Functions_of_the_foreskin_in_sexually_transmitted_infections
|archived=
|trans-title=
|language=
|last=Renard
|first=Aki
|init=
|author-link=
|publisher=Algonquin College
|website=https://www.researchgate.net/
|date=2026-04
|accessdate=2026-08-19
|format=
|quote=
}}</ref> The claims are based on the reported findings of three randomized clinical trials (RCTs) that were carried out more than a decade ago in Africa. Boyle & Hill (2011) have shown these RCTs to be have significant methodological flaws and statistical errors that render their claims invalid.<ref name="boyle-hill2011">{{BoyleGJ HillG 2011}}</ref> [[HIV#Population-based_studies| Two massive population studies]] published in 2021 found that [[circumcision]] provided no protective effect.


Fleiss et al. noted the presence of [[Langerhans cells]] in the prepuce.<ref name="fleiss-hodges-vanhowe1998"/> De Witte et al. (2007) have discovered that Langerhans cells produce ''Langerin'', which is a "natural barrier to [[HIV]] infection".<ref>{{DeWitte etal 2007}}</ref>
Fleiss et al. noted the presence of [[Langerhans cells]] in the prepuce.<ref name="fleiss-hodges-vanhowe1998"/> De Witte et al. (2007) have discovered that Langerhans cells produce ''Langerin'', which is a "natural barrier to [[HIV]] infection".<ref>{{DeWitte etal 2007}}</ref>