Soy isoflavones and menopause

Isoflavones are naturally occurring compounds in soy. Because their structure can interact with oestrogen receptors, they are sometimes used for menopause symptoms. The response depends on the product, the amount, the symptom and the person; a product marketed for menopause is not automatically suitable for everyone.

They are not the same as prescribed hormone therapy. Isoflavones also should not be relied on to explain periods stopping, mood changes, low sex drive or vaginal dryness without considering other causes.

Start with food sources if they suit you, and keep a simple record of hot flushes, night sweats, sleep and side effects. Before taking a concentrated product, show its ingredient list to a clinician or pharmacist. Mention allergies, breast or womb conditions, liver problems and all medicines, including other supplements.

Seek medical advice for bleeding after menopause, a new breast lump or discharge, unexplained weight change, or pelvic pain. Get urgent help for severe bleeding, fainting, chest pain or breathing difficulty. Do not delay an assessment because a supplement seems to be helping one symptom.

Ask which symptom you are trying to treat, whether an isoflavone product is appropriate with your history, and how long to assess its effect. Discuss alternatives for hot flushes, night sweats, sleep problems and vaginal symptoms.