Mirena IUD and Your Sex Drive
Switching over to a Mirena IUDs from OCs is often a great solution for periods, and cramps, not to mention the convenience and effectiveness which are both terrific, and it's completely, and rapidly reversible, but what do we know about Mirena and sexuality?
Reports were filtering in to me from patients expressing various responses: some had a fairly rapid resolution of their sexual OC complaints when switching to Mirena, others had no different response, and some who hadn't had prior problems with sexual function reported new complaints of low libido and arousal from the use of Mirena. Digging into the literature, there's not much to go on in the medical research files to give my patients firm answers on this. First some facts on how it works, then lets talk SEX.
Getting more into the physiology I can tell you more about the interaction of your hormones and your sexual function. Sex may require the interaction of several hormones and brain chemicals to function naturally. Most women become desirous of sex then begin to get aroused when stimulated. Others can respond in the opposite order. Hormones that affect the amount of desire as well as the amount of arousal have some impact on our sexuality. Progesterone's exact role in sexuality is not known, but it may have some adverse effects by lowering estrogen or testosterone. The Mirena IUD has a synthetic type of progesterone, that is a male hormone derivative called levonorgesterel. It is a safe and effective contraceptive agent which has been used for decades. Mirena leaks about 15 to 20 ug of levonorgesterel (LNG) daily into the uterus, this varies among women and will be the strongest in the first 6 months of IUD use. The Mirena prevents fertilization of eggs, and the LNG thickens cervical mucus so sperm cannot even penetrate. The pregnancy rate the first year is 0.2%! About 60% of women will eventually dry up their periods and not bleed at all the way the dose is designed. Hormonal side effects are reported by some as about 1% of the hormone gets into your blood stream. And about 1/10 users will stop the Mirena in the first year due to complaints of the various hormonal side effects.
Sex should improve if you have had a low sex drive on the pill and now are using an IUD. With a Mirena, estrogen levels stay normal, and vaginal lubrication should be normal. Polish researchers from the Medical University of Silesia in 2007 reported that Mirena users as a group had better sexual desire and arousal than control groups studied. When you discuss your sexual symptoms with your gyno, here's what you should bring to the discussion: facts about: desire, arousal, lubrication, orgasm, sexual satisfaction and pain with sex (dyspareunia). And the other thing to consider: what is your normal sexuality, there are women that have heightened awareness of sexuality and place more interest in sexuality. We have this issue with sexuality studies. Women who participate in a sexuality study are suddenly more interested in sex! And yes, if you're tangoing with a partner, what issues are there between you two? That affects sexuality too, and that's a whole different discussion.
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