| http://www.w3.org/ns/prov#value | - Progesterone also has an immunosuppressant effect, which means that women using hormonal contraceptives have less in the way of natural defenses against HIV and other STDs, such as chlamydial infection or genital herpes (HSV-2).13 14 In one study, ???HSV-2 infection itself more than tripled the risk of HIV infection.???15
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