By Kirstie Vesseur, Registered Clinical Nutritionist (CNA), Legacy Nutrition, NZ and Australia.
Search "adenomyosis diet" and you'll find long lists of foods to cut. Here's the honest version: there are no good trials of diet in adenomyosis itself. What we do have is solid evidence on inflammation, period pain, oestrogen clearance and iron. That's what this plan is built on. If you're still working out whether it's adenomyosis, endometriosis or both, start with my holistic guide to endometriosis and adenomyosis.
Goal 1: turn down inflammation and prostaglandins
Prostaglandins drive the cramping and some of the bleeding. Food can nudge them down.
Oily fish 2 to 3 times a week (120 to 150 g): salmon, sardines, mackerel, kahawai. Not a fish eater? ProOmega 2000 (Nordic Naturals), 2 softgels daily with food. Check with your GP if you take blood thinners.
Extra virgin olive oil as your main fat, 2 to 3 tbsp a day.
5+ colours of plants a day: berries, leafy greens, capsicum, beetroot, kumara.
Ginger: ½ tsp ground ginger twice daily for the first 3 to 4 days of your period.
Goal 2: help your body clear oestrogen
Fibre 25 to 30 g a day. Oestrogen leaves through your bowel, so a soft daily bowel motion matters.
2 tbsp ground flaxseed daily in porridge, yoghurt or a smoothie.
Cruciferous vegetables most days: broccoli, cauliflower, cabbage, kale, Brussels sprouts.
Alcohol low or none: it raises oestrogen levels.
Look after your gut: gut bacteria help decide how much oestrogen is recycled. More in the gut-hormone connection.
Goal 3: protect your iron
This is where adenomyosis differs from endometriosis. Heavy bleeding drains iron, and low ferritin shows up as exhaustion, hair shedding and breathlessness long before anaemia. My guide to iron deficiency in women covers testing and what your numbers mean. In short:
Iron-rich food every day: 120 g red meat 3 to 4 times a week, sardines, lentils, pumpkin seeds, fortified cereal.
Pair plant iron with vitamin C and keep tea and coffee an hour away from meals.
Test, don't guess: full blood count and ferritin every 3 to 6 months while periods are heavy.
A sample day
Breakfast: oats with 2 tbsp ground flaxseed, berries and Greek yoghurt
Lunch: sardine and white bean smash on wholegrain toast, tomatoes and capsicum
Snack: a kiwifruit and 2 tbsp pumpkin seeds
Dinner: beef, silverbeet and kumara stew with steamed broccoli
Evening: golden ginger latte
What about dairy, gluten and sugar?
Gluten: some women with endo feel better gluten free, mostly for gut symptoms. Get a coeliac test first, while you're still eating gluten, then trial it for 4 to 6 weeks if you want.
Dairy: no need to cut it unless it upsets your gut. If you do, replace the calcium.
Sugar and ultra-processed food: less is better for inflammation and energy, but there's no need for perfection.
Supplements that are worth discussing
Magnesium glycinate (Pure Encapsulations), 2 capsules (240 mg) in the evening for cramping and sleep. Caution with kidney disease.
Omega-3 as above.
Iron (Ferrasorb, Thorne) only after a ferritin test, 1 capsule every second day.
What diet can't do
Food won't shrink adenomyosis or replace medical treatment such as a Mirena, tranexamic acid or surgery. It can lower inflammation, protect your iron and help you feel more like yourself, and it makes your medical treatment work harder for you.
Get the full plan
The Endometriosis and Adenomyosis Blueprint (NZ$97) has the 7-day meal plan, shopping list, 7 recipes, heavy-day plan, supplement protocol and trackers. Or book a free 30 minute assessment.
Planning a pregnancy as well? Read methylfolate vs folic acid before pregnancy.
References
Rahbar N, et al. Effect of omega-3 fatty acids on intensity of primary dysmenorrhea. Int J Gynaecol Obstet. 2012;117(1):45-7.
Kashefi F, et al. Effect of ginger (Zingiber officinale) on heavy menstrual bleeding: a placebo-controlled, randomized clinical trial. Phytother Res. 2015;29(1):114-9.
Becker CM, et al. ESHRE guideline: endometriosis (notes diet evidence is still limited). Hum Reprod Open. 2022;2022(2):hoac009.
General education only, not medical advice. Check with your GP before changing your diet significantly or starting supplements.
