Adenomyosis and IVF: its effect on outcomes, long-term suppression, frozen transfer and the plan after surgery. The limits of the evidence are explained.
When adenomyosis and IVF are planned together, adenomyosis on its own does not prevent IVF. But the data on the effect of the disease on outcomes and on the benefit of preparation methods are limited. For this reason the plan is built around you. Most of the studies are retrospective and small, and some results contradict one another. The information is general in nature and does not replace an individual medical assessment.
Does adenomyosis prevent IVF?
There are data suggesting that adenomyosis may be linked to difficulty conceiving and to pregnancy loss. But these data mostly rest on observational studies, are of low quality and the results do not agree with one another. Because the definition and the diagnostic criteria of the disease are not fully settled in the scientific literature, comparison between studies is also difficult. Therefore neither "if there is adenomyosis, IVF fails" nor "adenomyosis has no effect on IVF at all" is verified information. Both are oversimplifications.
What is your treatment plan determined by?
When building the plan, your doctor does not look only at the diagnosis of adenomyosis. Your age, your ovarian reserve, whether the disease is widespread or in a particular area, the size of your uterus, the level of your bleeding and pain complaints, and whether there is accompanying endometriosis are assessed together. Each of these factors can affect both the choice of treatment and its timing.
Why is hormone suppression done before IVF?
Medicines that temporarily suppress the ovarian hormones (the GnRH group) can be used for a long time before IVF with the aim of reducing the effect of adenomyotic tissue. The aim is to make the uterine environment more suitable for implantation. This preparation period can last months; during this time, side effects resembling menopause, such as hot flushes, sleep disturbance and mood changes, may be seen. With long use, care is also needed for bone health.
The data on benefit are contradictory. While some analyses report that long-term suppression increases the likelihood of pregnancy and reduces miscarriage, a systematic review and meta-analysis published in 2025, relying only on retrospective studies, found no evidence that suppression improves outcomes. The quality of the studies is low; confounding factors such as uterine volume, reserve and accompanying endometriosis can affect the results. That is, it cannot be said either that this preparation is necessary for everyone or that it is of no use at all.
Can stimulation be started without a preparation period?
In some people one goes directly to stimulation without an additional preparation period. Because a prolonged preparation period can lose time with regard to age and reserve, the possible benefit of the preparation and the cost of waiting are weighed together. Which route is chosen depends more on personal circumstances than on data.
Fresh transfer, or frozen embryo transfer?
Some doctors prefer, in people with adenomyosis, to freeze the embryos and transfer them in a cycle in which the uterus is better prepared. The reasoning for this approach is to avoid the high hormone levels of the stimulation cycle affecting the uterus and to place the transfer in a planned cycle. But it has not been proven that frozen transfer is of benefit compared with fresh transfer in people with adenomyosis; the data differ a great deal. The results are also contradictory on whether suppression should be added before frozen transfer. Current embryo-number guidelines on this subject recommend single embryo transfer; multiple pregnancy carries the same risks in people with adenomyosis too.
How is IVF planned after adenomyosis surgery?
Organ-preserving surgery, which removes part of the adenomyotic tissue in the uterine wall, is discussed in some people who want a pregnancy. Information on the effect of this surgery on later IVF outcomes rests on case series and observational studies; the benefit is not certain. Because of the scar that forms in the uterine wall after the operation, concerns about the uterine wall in pregnancy arise; for this reason the plan for pregnancy and mode of birth is discussed separately. Spotting and mild cramp after the operation can be usual. In which order the surgery and IVF will be dealt with is decided together with your doctor, also taking into account the operation's own risks.
How is the benefit of preparation balanced against the waiting time?
Many people given a diagnosis of adenomyosis are dealing at the same time with age, reserve and ongoing symptoms. When long preparation periods, surgery and additional procedures pile up, time can lengthen quickly. Because the data are limited, it is not possible to present any option as "must definitely be done" or "must not be done at all". A more meaningful approach is to discuss openly with your doctor each option's possible benefit, its unknowns and its time cost, and to make the decision according to your own priorities. Current assessments do not recommend routine use of most such add-on procedures; it is sensible to ask your doctor what the additional procedures recommended to you because of adenomyosis rest on.
How is follow-up done if a pregnancy occurs?
In a pregnancy with adenomyosis, monitoring can be planned separately; how often and with which examination you will be monitored varies with you and with the extent of the disease. Planning monitoring more carefully in pregnancy does not mean that a problem will arise.
If you have heavy menstrual bleeding because of adenomyosis, it is sensible to talk in advance with your doctor about where the distinction between "heavy bleeding" and "more bleeding than expected" lies for you. Stimulation medicines can rarely lead to clotting within the vessels or to ovarian hyperstimulation syndrome (OHSS).
How can you get support if making decisions is hard on you?
Living with a painful, bleeding disease and at the same time carrying the uncertainty of fertility treatment is tiring. The lack of clear data can lead to a lack of clear decisions as well. Talking about uncertainties with your doctor, sharing decisions with your partner and, if necessary, applying to a mental health professional can lighten your load.
Frequently Asked Questions
If I have both adenomyosis and endometriosis, why does the doctor ask about reserve, cysts and operation history?
If you have endometriosis, your ovarian reserve, any accompanying cysts and the operations you have had can affect the stimulation plan and how long the preparation period will last. For this reason this information is assessed together with the diagnosis of adenomyosis. Your doctor determines the approach according to you.
Which reports should I take to the doctor before IVF?
Taking your ultrasound and, if you have them, MRI reports, summaries of your previous IVF attempts, the notes of the operations you have had, your ovarian reserve test results and the medicines you are currently using makes the assessment easier. A short note on the heaviness of your menstrual bleeding is also useful.
What should I do if the side effects during the suppression period are bothersome?
If side effects such as hot flushes, sleep disturbance or mood changes make daily life difficult, tell your doctor; do not stop or change the medicine on your own decision. The doctor decides with you on monitoring these side effects and on reviewing the preparation plan.
Does IVF treat the pain and bleeding complaints of adenomyosis?
IVF is a method aimed at achieving a pregnancy; it is not used to treat adenomyosis complaints such as pain and heavy bleeding. The monitoring and management of these complaints should also be discussed with the doctor separately from the pregnancy plan.
Does a diagnosis of adenomyosis mean IVF will fail?
No. Adenomyosis on its own does not prevent IVF. The data on its relationship with outcomes are limited and contradictory; your outcome cannot be stated by looking only at this diagnosis.
Is long-term suppression necessarily needed before IVF?
No. The results on the benefit of suppression are contradictory. The possible benefit is assessed together with the effect of waiting on your age and ovarian reserve.
Can hot flushes occur during suppression treatment?
Yes. Hot flushes, sleep disturbance and mood changes may be seen. With long use, bone health is also taken into account.
Can stimulation be started directly without additional preparation?
Yes. This route can be chosen in some people. The time that would pass with preparation and your circumstances are assessed together with your doctor.
Is frozen transfer definitely more beneficial than fresh transfer?
No. It has not been proven that frozen transfer is of benefit compared with fresh transfer in people with adenomyosis. The results on adding suppression before frozen transfer are also contradictory.
Does adenomyosis surgery definitely improve the outcome of IVF?
No. The benefit of the operation for later IVF outcomes is not certain. The operation's risks, the scar in the uterine wall and the plan for pregnancy are assessed separately.
Does needing my pregnancy follow-up to be planned separately definitely mean a problem will arise?
No. Monitoring can be planned according to your situation and the extent of the disease. More careful follow-up does not mean that a problem will arise.
Can I get support in coping with the uncertainties in treatment?
Yes. You can talk about your questions with your doctor, share decisions with your partner and, if necessary, turn to a mental health professional.
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