Menopause After Cancer: Your Nervous System Can Be Your Ally
Updated: 3 minutes ago
Something that is rarely pointed out to menopausal women is that their symptoms are not a purely hormonal event. The nervous system plays a central role too, and this distinction is rather important, especially when hormonal replacement is not an option.
Why This Matters So Much After Cancer
If you've been through hormone-sensitive cancer treatment, you'll know that Hormonal Replacement Therapy (HRT) in most cases is not indicated or safe. Or you’ve been through a different type of cancer, but HRT (or alternative medications) does not feel like the solution for you. Medical teams are often not prepared to direct you to other types of support, even if they exist.
The Nervous System Connection
Take hot flushes, for example. Your body regulates temperature through your autonomic nervous system, the same system that controls your fight-or-flight response. When oestrogen drops, the thermostat in your brain becomes more sensitive, and the nervous system becomes quicker to sound the alarm: flushing, sweating, that sudden wave of heat.
Oestrogen also helps regulate cortisol, the primary stress hormone. So as oestrogen falls, the body loses some of its natural buffering against stress, and stress itself can trigger or worsen a flush. It becomes a loop: a flush triggers stress, stress feeds the next flush.
It makes sense, then, that working directly with the nervous system may not be a secondary option in this context.
What The Wider Evidence Says
Reviewing the research on non-hormonal approaches to hot flushes in people with cancer, relaxation techniques, mindfulness-based practices, and hypnotherapy all show real, measurable benefits (1). The effects range from feeling calmer overall to fewer and less severe hot flashes. Clinical guidelines, including ones written specifically for people with a history of breast cancer, recommend these approaches as evidence-based, whole-person care (2).
Where HeartMath Fits, and Why
This is where the work I do with clients using HeartMath comes in. As a certified trauma-informed HeartMath practitioner, it’s become one of the tools I return to most often in this context.
HeartMath is built around a measure called heart rate variability, or HRV. This is the natural, beat-to-beat variation in the time between your heartbeats. When you're stressed, that rhythm becomes erratic and jagged. When you're calm and centred, it smooths out into a steady, wave-like pattern researchers call ‘heart-brain coherence’.
The HeartMath Institute, founded in 1991, built biofeedback tools (small sensors that show you your own heart rhythm in real time), so we can actually see this shift happening and learn to create it on purpose, usually through slow, heart-focused breathing paired with genuine, regenerative feelings such as appreciation, care, and ease.
In the menopause context, you can look at HRV as a direct readout of how the autonomic nervous system is functioning moment to moment. Training the body into coherence is like training the system that controls nervous system related symptoms.
There's real clinical research behind harnessing HRV to support menopausal symptoms in cancer survivorship, so it’s not just a theory. A 2025 randomised controlled trial, published in the journal Current Oncology, tested a four-week heart rate variability biofeedback programme (using slow, paced breathing similar to what HeartMath teaches) in UK breast cancer survivors (n=60) (3). The results were encouraging: participants showed a significant, lasting improvement in sleep quality, a significant reduction in night sweats, and reduced anxiety compared to the control groups.
In my own clinical work, what I often hear from clients who adopted HeartMath techniques and used them consistently (and that I observe in myself), is a better sense of calm and clarity in general, fewer symptoms overall, with acute responses like flushes and night sweats that feel less overwhelming, shorter, and easier to move through.
A Powerful Complementary Strategy
Harnessing the benefits of HRV and heart-brain coherence isn't a guarantee that symptoms will disappear completely. But the potential of nervous system regulation work in this context is significant. It manifests powerfully especially when it’s part of a whole-person approach, alongside nutritional and lifestyle interventions, as well as emotional support that so often gets overlooked after cancer.
If you've been told there's nothing else to try beyond hormonal replacement, I hope this changes that a little.
Warmly,
Silvia
Dr Silvia Grisendi PhD, RegNT CFMP RHC
Essence & Flow
References
Tran S, Hickey M, Saunders C, Ramage L, Cohen PA. Nonpharmacological therapies for the management of menopausal vasomotor symptoms in breast cancer survivors. Support Care Cancer. 2020. DOI: 10.1007/s00520-020-05754-w
Hickey M, Basu P, Sassarini J, et al. Managing menopause after cancer. Lancet. 2024;403(10430):984-996. DOI: 10.1016/S0140-6736(23)02802-7
Dolgilevica K, Grunfeld E, Derakshan N. Heart Rate Variability Biofeedback Training Can Improve Menopausal Symptoms and Psychological Well-Being in Women with a Diagnosis of Primary Breast Cancer: A Longitudinal Randomized Controlled Trial. Curr Oncol. 2025;32(3). DOI: 10.3390/curroncol32030150
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