The Hormone List: Symptoms of Oestrogen Dominance

The Hormone List_London Based Nutritionist Kay Ali, Co Founder of You Need A Nutritional Therapist lists common symptoms of oestrogen dominance

In my last few posts I shared with you some of the symptoms and factors contributing to low oestrogen. But what does high oestrogen look like? Here’s a list of common symptoms in both men and women:

  • ER positive cancers. That includes cancer of the breast, ovaries, uterus, testes and kidneys. Remember oestrogen causes cells to grow. If there’s too much that isn’t being cleared out efficiently and safely it can predispose us to malignant growths.

  • Depression and anxiety. Yes, a few posts back I said that too little oestrogen can cause these symptoms due to insufficient stimulation of the enzyme that promotes serotonin aka our happy hormone. Well, sadly too much of oestrogen causes serotonin to go down a dark and slippery slope predisposing us to feeling blue too.

  • Thyroid problems. I’ve lost count of the number of clients I’ve seen diagnosed with hypothyroidism and prescribed thyroxine, yet their doctors have never investigated their oestrogen balance. Yet it’s well established in scientific literature that oestrogen may increase thyroid binding globulin, lowering the efficacy of thyroid hormones. There’s higher prevalence of hypothyroidism amongst menopausal women on HRT.

  • Female gynaecological problems. Fibroids, cycts, fibrocystic breasts, heavy periods, breast swelling and tenderness. I’m grossly over simplifying this to keep the post as short as possible but what do all these conditions have in common? Overgrowth of tissue. And what causes cells to grow? Bingo! Oestrogen.

  • Increased blood clotting. Oestrogen has been shown to increase blood clotting factors and is often attributed to increased blood clots during pregnancy. Evidence shows hormonal contraceptives increase risk of blood clotting too. Check the patient pamphlet – it always says if there’s a familial history of stroke inform your GP due to risk factors.

  • Erectile dysfunction and ‘moobs’ (that's man-boobs to the uninitiated). Yep, oestrogen excess affects men as well as women. Monday's post will be all about the factors that drive oestrogen excess. Stay tuned!

If you suspect you are hormonally imbalanced and you'd like to work with Kay, please contact her team on

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