Managing Menopause After Cancer: What Helps, What’s Safe, What to Prioritise
With Dr Louise Carter and Dr Lucy Steed
Menopause after cancer can arrive early, suddenly, or feel more intense than expected. Treatments can affect ovarian function, and some breast cancer medicines can “create or worsen a menopausal state.” The result is often a mix of hot flushes, night sweats, sleep disruption, mood changes, brain fog, vaginal and urinary symptoms, and joint pains.
Chemotherapy can “directly damage ovarian function.” Pelvic radiotherapy can impair ovarian function depending on where it’s directed. Surgery can cause immediate menopause if ovaries are removed, and some people are “plunged into menopause,” with symptoms that can feel severe and abrupt.
Can HRT be used after cancer?
It depends on the cancer type and subtype. For breast cancer, hormone receptor status matters, and decisions are not always “black and white.” In selected cases with severe symptoms, HRT “might still be considered,” but it needs an individual discussion involving menopause and oncology teams. For most cancers, HRT was described as having “absolutely no issue,” with only a few specific situations where it’s contraindicated.
If HRT isn’t an option, what else can help?
For hot flushes and night sweats, non-hormonal options discussed included SSRIs/SNRIs, gabapentin, and pregabalin. They can help, but were described as “not as effective as HRT,” and they don’t replace oestrogen for bone and heart protection.
CBT also came up as a practical option with a good evidence base for coping with hot flushes and menopause more broadly.
A newer non-hormonal drug (brand name mentioned as Bazoa) was described as encouraging for hot flushes, but not “the magic pill that everyone thought it was,” and liver function problems were noted as a concern.
Vaginal dryness: a treatment that’s often still possible
Vaginal oestrogen was described as localised and “safe in women even who have had breast cancer” in most cases, because it does not get absorbed systemically in meaningful amounts. People on aromatase inhibitors may need a more nuanced discussion, often involving oncology.
Long-term health: bones, heart, and the basics that matter
Early or prolonged low oestrogen can affect bone and cardiovascular health. Even without HRT, there are prevention steps with strong evidence: staying active, strength training, weight-bearing exercise, a balanced diet, reducing alcohol and smoking, and ensuring calcium and vitamin D. Dietary calcium was described as better absorbed than supplements, and a calcium intake calculator can help decide if supplements are needed.
Bone density scans are not automatically needed for everyone. Risk can be assessed first, and scans are recommended if risk is above a threshold.
Supplements: caution
A “food first approach” was emphasised. Supplements can interact with medicines, and liver problems were mentioned in people taking many unregulated products.
