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  • Title: The intrauterine device, pelvic inflammatory disease, and infertility: the confusion between hypothesis and knowledge.
    Author: Grimes DA.
    Journal: Fertil Steril; 1992 Oct; 58(4):670-3. PubMed ID: 1426307.
    Abstract:
    An earlier editorial made many false claims against the IUD and women. In many cases, the author extrapolated experience from the Dalkon Shield to today's IUDs. He even said the modern contraception has not reduced fertility, but data from at least 7 developing countries clearly refute that statement. Moreover he claims that the most female ambition is motherhood. Thus he blamed women for high fertility rates without acknowledging that women in developing countries have little control over fertility. Husbands determine when and how often to have intercourse and whether to use contraceptives or not. Women do not always have access to contraceptives. The author boldly stated that the IUD poses a threat to future fertility because it causes pelvic infections. The real threat is intercourse by which upper genital tract infections are transmitted. It is these sexually transmitted diseases that cause pelvic infections. The studies the author quoted have been found to have considerable bias and/or methodologic flaws. Some studies used as the comparison group women using contraceptive which lower the pelvic infection risk. Contemporary studies find no increased risk of infertility in copper and hormone IUD users, but instead show increased risk for multiple sex partners. Some studies do indicate an increased risk shortly after insertion which is due to insertion instrumentation used. The author even claimed that a Swedish study concluded that IUDs promote pelvic infection in patients with gonorrhea and chlamydia. But the Swedish study found no difference in pelvic infection risk between IUD and non-IUD, nonhormonal contraceptive users. Based on hundreds of millions of woman-years of worldwide experience, WHO claims modern copper and hormone releasing IUDs, when used as directed, may be the most effective and reliable reversible contraceptive method. This editorial based on flawed conclusions and misinformation does an injustice to the IUD and to women.
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