Editing Condom (section)

==== Lambskin ====
Condoms made from [[sheep]] [[intestine]]s, labeled "lambskin", are also available. Although they are generally effective as a contraceptive by blocking sperm, studies have found that they are less effective than latex in preventing the transmission of [[sexually transmitted infections]] because of pores in the material.<ref>{{cite book |author=Boston Women's Health Book Collective |title=Our Bodies, Ourselves: A New Edition for a New Era |publisher=Touchstone |location=New York, NY |year=2005 |isbn=978-0-7432-5611-7 |page=[https://archive.org/details/ourbodiesoursel00bost/page/333 333] |url=https://archive.org/details/ourbodiesoursel00bost/page/333}}</ref> This is because intestines, by their nature, are porous, permeable membranes, and while sperm are too large to pass through the pores, viruses—such as [[HIV]], [[herpes]], and [[genital warts]]—are small enough to pass.<ref name="PPAA" />

As a result of laboratory data on condom porosity, in 1989, the FDA began requiring lambskin condom manufacturers to indicate that the products were not to be used for the prevention of sexually transmitted infections.<ref name="books.google.com">{{cite web |title=FDA Consumer Investigative Reports - Condoms Relabeled for Accuracy |date=January 1992 |url=https://books.google.com/books?id=LIct5Kf9iHcC&pg=SA1992-PA42 |access-date=23 September 2019 |archive-date=4 May 2021 |archive-url=https://web.archive.org/web/20210504112841/https://books.google.com/books?id=LIct5Kf9iHcC&pg=SA1992-PA42 |url-status=live }}</ref> The FDA cautions that while lambskin condoms "provide good birth control and a varying degree of protection against some, but not all, sexually transmitted diseases", people do not know what STIs a partner might have, and thus cannot assume that a lambskin condom will protect them.<ref name="books.google.com"/>

While lambskin condoms avoid triggering [[latex allergies]], [[polyurethane]] condoms do as well, while also protecting more reliably against STIs.<ref>{{Cite journal |last1=Taylor |first1=James S. |last2=Erkek |first2=Emel |date=2004-08-24 |title=Latex allergy: diagnosis and management |journal=Dermatologic Therapy |language=en |volume=17 |issue=4 |pages=289–301 |doi=10.1111/j.1396-0296.2004.04024.x |issn=1396-0296|doi-access=free |pmid=15327474 }}</ref><ref name=":1">{{Cite journal |last=Kulig |first=John |date=October 2003 |title=Condoms: the basics and beyond |url=https://pubmed.ncbi.nlm.nih.gov/15122165 |journal=Adolescent Medicine |volume=14 |issue=3 |pages=633–645, vii |doi=10.1016/S1041349903500494 |doi-broken-date=1 November 2024 |issn=1041-3499 |pmid=15122165}}</ref> As slaughter by-products, lambskin condoms are also not [[vegetarian]]. Pharmacist advice prepared by the ''[[Canadian Pharmaceutical Journal]]'' says that lambskin condoms "are generally not recommended" due to limited STI prevention.<ref>{{Cite journal |last=Ruddock |first=Brent |date=September 2004 |title=Condoms protect you: shield yourself from STIs |journal=Canadian Pharmaceutical Journal |volume=137 |issue=7 |pages=42 |id={{ProQuest|221125941}}}}</ref> An article in ''Adolescent Medicine'' advises that they "should be used only for pregnancy prevention".<ref name=":1" />