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  • Title: Hormonal contraceptive use and women's risk of HIV acquisition: priorities emerging from recent data.
    Author: Ralph LJ, Gollub EL, Jones HE.
    Journal: Curr Opin Obstet Gynecol; 2015 Dec; 27(6):487-95. PubMed ID: 26536211.
    Abstract:
    PURPOSE OF REVIEW: Understanding whether hormonal contraception increases women's risk of HIV acquisition is a public health priority. This review summarizes recent epidemiologic and biologic data, and considers the implications of new evidence on research and programmatic efforts. RECENT FINDINGS: Two secondary analyses of HIV prevention trials demonstrated increased HIV risk among depot medroxyprogesterone acetate (DMPA) users compared with nonhormonal/no method users and norethisterone enanthate (NET-EN) users. A study of women in serodiscordant partnerships found no significant association for DMPA or implants. Two meta-analyses found elevated risks of HIV among DMPA users compared with nonhormonal/no method users, with no association for NET-EN or combined oral contraceptive pills. In-vitro and animal model studies identified plausible biological mechanisms by which progestin exposure could increase risk of HIV, depending on the type and dose of progestin, but such mechanisms have not been definitively observed in humans. SUMMARY: Recent epidemiologic and biologic evidence on hormonal contraception and HIV suggests a harmful profile for DMPA but not combined oral contraceptives. In limited data, NET-EN appears safer than DMPA. More research is needed on other progestin-based methods, especially implants and Sayana Press. Future priorities include updating modeling studies with new pooled estimates, continued basic science to understand biological mechanisms, expanding contraceptive choice, and identifying effective ways to promote dual method use.
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