Adenomyosis and Getting Pregnant: What You Need to Know

If you've just been diagnosed

Getting an adenomyosis diagnosis when you're trying to conceive is frightening. I want to start there — with the reality that you're probably reading this while feeling scared, frustrated, or both. Maybe you've been in pain for years and nobody took it seriously. Maybe you've only just learned this word exists.

Here's what I want you to know first: adenomyosis does not mean you can't have a baby. It means your path may need more planning, more support, and possibly more treatment than you expected. But women with adenomyosis get pregnant and carry healthy babies every day. The research is clear on that, even when it's also clear that the condition makes things harder.

What adenomyosis actually is

Adenomyosis happens when tissue that normally lines the inside of your uterus (the endometrium) grows into the muscular wall of the uterus (the myometrium). Each month, this misplaced tissue responds to your hormonal cycle — thickening, breaking down, and bleeding — except it's trapped inside the muscle wall with nowhere to go.

The result is inflammation, swelling, and a uterus that can become enlarged and tender. For some women, the symptoms are severe. For others, adenomyosis is discovered incidentally during an ultrasound and causes no symptoms at all.

Common symptoms include:

• Heavy, prolonged periods (menorrhagia) — often with large clots
• Severe menstrual cramps that worsen over time
• Pain during sex (dyspareunia)
• Chronic pelvic pain between periods
• A feeling of pressure or bloating in the lower abdomen
• An enlarged uterus — sometimes noticeable as a firm, tender abdomen

If that list sounds familiar but nobody's mentioned adenomyosis to you, you're not alone. It's historically been under-diagnosed, partly because the only definitive diagnosis used to require a hysterectomy. That's changed — transvaginal ultrasound and MRI can now identify adenomyosis in most cases without surgery.

Adenomyosis vs endometriosis — they're not the same thing

This is one of the most common sources of confusion. Both conditions involve endometrial-like tissue growing where it shouldn't, but the location is different:

Sources: NICE, RCOG, Scan.com UK. Adenomyosis prevalence varies widely depending on diagnostic method.

If you've been diagnosed with endometriosis and also have very heavy periods or an enlarged uterus, ask your specialist about adenomyosis too. The two conditions can coexist and may need different treatment approaches.

How adenomyosis affects getting pregnant

The research on adenomyosis and fertility has grown substantially in recent years, though it's still less well-studied than endometriosis. Here's what the evidence says:

Implantation. Adenomyosis alters the uterine environment in ways that can make implantation harder. The misplaced endometrial tissue triggers chronic inflammation in the myometrium, which can affect uterine contractions (dysperistalsis) and blood flow to the endometrium. Both of these reduce the chances of an embryo implanting successfully.

IVF outcomes. A meta-analysis of 17 observational studies found that women with adenomyosis had lower clinical pregnancy rates, lower implantation rates, and higher miscarriage rates during IVF compared to women without the condition (Vercellini et al., 2020). However, the evidence quality was rated as low — meaning the actual impact varies significantly between individuals.

Natural conception. A 2023 systematic review in Ultrasound in Obstetrics & Gynecology estimated that adenomyosis is present in approximately 20–35% of women being investigated for subfertility. But many women with adenomyosis conceive naturally without ever knowing they have it — particularly those with mild or focal disease.

Pregnancy complications. Once pregnant, adenomyosis is associated with a modestly increased risk of miscarriage, preterm birth, and placenta-related complications. Close monitoring throughout pregnancy is recommended, but the absolute risks are still relatively small for most women.

Treatment options when you're trying to conceive

The treatment strategy depends on the severity of your adenomyosis, your age, and whether you're trying naturally or through IVF.

GnRH agonist pre-treatment (for IVF). This is currently the most evidence-backed approach for women with adenomyosis undergoing IVF. GnRH agonists (such as Lupron/leuprolide) temporarily suppress oestrogen, shrinking the adenomyotic tissue and reducing inflammation before embryo transfer. A 2024 review in Frontiers in Reproductive Health found that GnRH agonist pre-treatment improved pregnancy outcomes in adenomyosis patients (Xu et al., 2024).

Frozen embryo transfer (FET). Many specialists recommend FET over fresh transfer for women with adenomyosis. The controlled preparation of the endometrium in an FET cycle may produce a more receptive lining than the stimulated environment of a fresh cycle.

Adenomyomectomy. Surgical removal of focal adenomyotic tissue is an option for some women, particularly those with clearly defined adenomyomas. A 2025 systematic review found that fertility-sparing surgical interventions improved reproductive outcomes, though the evidence is still limited and surgery carries its own risks (Zhang et al., 2025).

Uterine artery embolisation (UAE). Reduces blood supply to adenomyotic tissue. Can improve symptoms but its effect on fertility is less clear — discuss with your specialist before considering this if you want to conceive.

What doesn't work for fertility: The combined oral contraceptive pill and the Mirena IUS (progesterone coil) both manage adenomyosis symptoms effectively, but they prevent pregnancy. They're useful for symptom control while you're planning, but not during active trying.

What you can do with nutrition

There's no specific "adenomyosis diet" backed by randomised trials — the condition simply hasn't been studied at that level yet. But we do know that adenomyosis is fundamentally an inflammatory condition with an oestrogen-dependent component. That means the same anti-inflammatory, hormone-balancing nutritional principles that apply to endometriosis are likely relevant here too.

Focus on anti-inflammatory foods:

• Omega-3 fatty acids — oily fish (salmon, mackerel, sardines) twice a week, plus flaxseeds and walnuts daily. Omega-3s reduce prostaglandin production, which drives both pain and inflammation. Our fertility foods guide covers this in detail
• Cruciferous vegetables — broccoli, cauliflower, kale, Brussels sprouts. These contain indole-3-carbinol (I3C) and diindolylmethane (DIM), which support healthy oestrogen metabolism. Eat them cooked for easier digestion
• Turmeric — curcumin has demonstrated anti-inflammatory properties in multiple studies. Add to cooking, or consider a supplement with black pepper (piperine) for absorption. I use it in most of my cooking — golden turmeric milk, curries, scrambled eggs
• Colourful fruits and vegetables — berries, leafy greens, sweet potatoes, bell peppers. The antioxidants help combat oxidative stress associated with chronic inflammation
• Extra virgin olive oil — a cornerstone of the Mediterranean diet, rich in oleocanthal (a natural anti-inflammatory compound)

Consider reducing:

• Red meat — associated with higher oestrogen levels when consumed in excess. You don't need to eliminate it, but limiting to 1–2 portions per week is sensible. Choose organic, grass-fed when possible
• Refined sugar and processed foods — these promote systemic inflammation. Not about perfection — about shifting the balance
• Alcohol — increases oestrogen levels and promotes inflammation. Worth reducing or eliminating while trying to conceive regardless of adenomyosis
• Caffeine — some evidence it worsens uterine cramping. Moderate intake (1–2 cups of coffee) is probably fine, but listen to your body

Supplements worth discussing with your specialist:

• Vitamin D — deficiency is common and may worsen inflammatory conditions. Read our full guide
• Magnesium — can help with cramping and muscle relaxation. 300–400mg daily
• Omega-3 (EPA/DHA) — 1–2g daily if you're not eating oily fish regularly
• NAC (N-acetyl cysteine) — an antioxidant with some evidence for reducing endometriotic tissue. Research on adenomyosis specifically is limited but promising

When to push for answers

Adenomyosis is still under-diagnosed. If you've been told your heavy, painful periods are "normal" but they're affecting your quality of life, push for investigation. Specifically:

• Request a transvaginal ultrasound — this can identify adenomyosis in experienced hands. Ask if the sonographer has specific experience with adenomyosis (it's operator-dependent)
• If ultrasound is inconclusive, push for MRI — more sensitive for adenomyosis, particularly for diffuse disease
• Ask about your junctional zone — this is the boundary between endometrium and myometrium. A thickened junctional zone (>12mm) on MRI is a key diagnostic marker
• If you're starting IVF, tell your clinic about suspected adenomyosis — it may change their protocol (GnRH agonist pre-treatment, frozen transfer preference)

You deserve a diagnosis, not a dismissal.

The bottom line

Adenomyosis is a genuine barrier to fertility for some women, but it's not an insurmountable one. The condition is better understood and better diagnosed than it was even five years ago. Treatment options exist — from GnRH agonist pre-treatment before IVF to surgical approaches for focal disease. And while no diet will cure adenomyosis, an anti-inflammatory, Mediterranean-style approach can genuinely help manage symptoms and support the healthiest possible uterine environment for conception.

If you've just been diagnosed, take a breath. Get the right team around you — a specialist who understands adenomyosis and fertility, not just a generalist. And know that many, many women in your position have gone on to have the families they wanted.

References

1. Vercellini, P. et al. (2020). Fertility, pregnancy and neonatal outcomes of patients with adenomyosis: a systematic review and meta-analysis. Human Reproduction Update, 27(3). PubMed
2. Xu, Y. et al. (2024). Effects of pretreatment strategies on fertility outcomes in patients with adenomyosis. Frontiers in Reproductive Health. Frontiers
3. Zhang, L. et al. (2025). Reproductive outcomes after fertility-sparing interventions for symptomatic adenomyosis. BMC Pregnancy and Childbirth. Springer
4. Alson, S. et al. (2024). Correlation of adenomyosis features to live birth rates after IVF/ICSI. Acta Obstetricia et Gynecologica Scandinavica. Wiley
5. Cozzolino, M. et al. (2023). Prevalence of adenomyosis in women with subfertility: systematic review and meta-analysis. Ultrasound in Obstetrics & Gynecology, 62(1), 23–41.
6. Donnez, J. & Dolmans, M.M. (2022). Endometriosis and adenomyosis: update on pathophysiology and management. Lancet, 400(10368), 1953–1972.

Written by

Share

Copied