[NorthMountain]

These actually enhance the transmission of viral and bacterial pathogens.

I'm curious as to how that works (other than encouraging more frequent casual intercourse with strangers). Have you any links to research on the topic?

As noted in another post, much of the increase in VD is among male sodomites. I don't think they're dosing themselves with hormonal contraceptives. They're simply engaged in conduct that's inherently unsafe, unsanitary, and unhealthful.

[Mrs. Don-o]

Hormonal contraception enhances risk of STD's (first articles I found) https://www.guttmacher.org/journals/ipsrh/2002/03/womens-susceptibility-some-stds-affected-hormonal-method-use

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High-dose oral contraceptives speed replication of AIDS virus

https://academic.oup.com/cid/article/45/3/360/359561/The-Influence-of-Hormonal-Contraceptive-Use-on-HIV

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There's lots more. Google keywords, for instance

hormonal risk STDs

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That's clilical stuff. Plus, behaviorally, users of long-term contraceptives have many more partners and sexual encounters.

Bottom line: hormonal contraceptives have a multiplier effect on STDs