Why Your Muscles Do Far More Than Move YouAnd what it means for your brain, your metabolism, and your long-term health.
- infomenopausehub
- Mar 16
- 6 min read
Updated: Mar 24
The Extraordinary Secret Life of Your Muscles"The Four Superpowers of Muscle in Menopause"Introduction
And what it means for your brain, your metabolism, and your long-term health
By Anna Pattison | Registered Nurse, Clinical Myotherapist & Menopause Mentor | Menopause Hub
⏱ 5 minute read
⚡ The Short Version
You have around 600 skeletal muscles in your body.
They move your skeleton — every step, every reach, every turn of your head.
But that is the smallest part of their job.
Skeletal muscle is one of the most metabolically active and hormonally influential organs in the human body.
In perimenopause and menopause, it is under direct threat.
Most women are never told about this.
That is what this series is here to change.
What Do Your Muscles Actually Do?
Most women know muscles help them move.
Fewer know that skeletal muscle is also an endocrine organ — a chemical signalling system — that communicates with almost every organ in the body.
Your muscles talk to your brain.They regulate your blood sugar.They drive your metabolism.They support your immune system.They protect your bones.
And all of that — every single function — is influenced by oestrogen.
When oestrogen declines in perimenopause and menopause, your muscles feel it first.Most women feel it too — they just don't know that's what's happening.
The Four Superpowers of Your Muscles in Menopause
Here is what the science actually shows.
🧠 Superpower 1 — Brain
Every time your muscles contract, they release proteins called myokines.
Two of them — irisin and cathepsin B — travel to the brain and stimulate BDNF: the protein that grows new brain cells, strengthens memory, and stabilises mood.
Low BDNF is consistently linked to depression, anxiety and early cognitive decline.
Oestradiol also supports BDNF production directly — so when oestrogen drops and exercise decreases, BDNF can fall sharply.
Brain fog, memory slips and mood changes in menopause are not just hormonal. They are partly muscular.
🍬 Superpower 2 — Metabolism
Your muscles handle approximately 80% of your body's insulin-stimulated glucose uptake.
The more muscle you have, and the more you move it, the better your body manages blood sugar after every meal.
Muscle tissue also burns 3–5 times more energy at rest than fat tissue.
Your muscle mass largely determines how much energy your body uses around the clock — not just during exercise.
Menopause weight gain is often less about eating more — and more about the metabolic shift that comes with muscle loss.
🛡️ Superpower 3 — Bones & Immunity
Exercise-induced myokines reduce chronic inflammation and support immune function — including natural killer cell activity.
More than 70% of women experience musculoskeletal symptoms during the menopausal transition — joint pain, muscle weakness, body aches.
These are now recognised clinically as the Musculoskeletal Syndrome of Menopause.
(Wright et al., 2024, Climacteric 27(5))
Despite being highly prevalent, musculoskeletal symptoms remain routinely unrecognised and undertreated in clinical practice.
🌿 Superpower 4 — Healthy Ageing
Muscle mass, strength and function are among the strongest predictors of long-term health and independence.
Women lose an average of 0.6% of muscle mass per year after menopause.
Over a decade, that is more than 6% of total muscle — and the functional consequences compound.
This loss — clinically termed sarcopenia — is not just about size.
Muscle fibres become less responsive. Mitochondrial efficiency declines. Recovery from exercise slows.
This is why the same workout that once felt manageable can feel harder in your late 40s — and why building muscle becomes more important, not less, as you move through this transition.
The Hormonal Connection Most Women Are Never Told About
Here is something most women are never told: oestrogen receptors are embedded throughout your skeletal muscle tissue.
Oestradiol— the form of oestrogen that declines most sharply in perimenopause — doesn't just affect your periods or your hot flushes.
It directly supports your muscle's ability to:
Build and repair tissue
Generate energy efficiently
Manage blood sugar
Produce brain-protective proteins
Reduce inflammation
When oestradiol drops, all of that is quietly affected.Often long before a woman connects her symptoms to her muscles.
What the Numbers Actually Show
The data behind the double-decline
Women lose an average of 0.6% of muscle mass per year after menopause — more than 6% over a decade (Sipilä & Narici, 2021)
Post-menopausal women show approximately 25% less muscle glucose uptake than pre-menopausal women — not from age alone, but from oestrogen loss (Richter & Hargreaves, 2013)
More than 70% of women experience musculoskeletal symptoms during the menopausal transition (Wright et al., 2024)
Oestradiol receptors are embedded throughout skeletal muscle — oestrogen loss directly impairs muscle protein synthesis and mitochondrial function (Zhang et al., 2024)
This is not a small side effect of getting older. It is a coordinated biological shift — affecting muscle, metabolism, brain health and immunity — all driven by the same hormonal change.
What You Can Do — Right Now
The genuinely good news:
Muscle responds to the right inputs at any age and any stage of the menopause journey.
You are not too late.But you do need a strategy.
Move with intention
Resistance training 2–3 times per week is the single most powerful tool for preserving muscle mass and metabolic health in menopause.
Pair it with regular aerobic exercise — walking, cycling, swimming, dancing — and you are also driving BDNF production and glucose metabolism.
Consistency matters far more than perfection.
Eat enough protein
Most women are not eating nearly enough.
After menopause, muscle protein synthesis is blunted — your muscles need more raw material to maintain themselves.
Aim for around1.2–1.6g of protein per kilogram of body weight daily— spread across meals.
Prioritise leucine-rich sources: eggs, fish, legumes, dairy.
Have an informed conversation about MHT
Menopausal Hormone Therapy has direct protective effects on muscle mass and glucose metabolism.
The muscle case for MHT is strong — and it deserves to sit alongside the conversation about hot flushes, not get left out of it.
Talk to a clinician who understands the full picture.
Remember this.
You are not in decline.
You are in a transition that requires a different strategy.
And now you have the context to build one.
Frequently Asked Questions
How much muscle do you lose during menopause?
Women lose an average of 0.6% of muscle mass per year after menopause.Over a decade that is more than 6% of total muscle — and the functional consequences compound.
(Sipilä & Narici, 2021, Journal of Endocrinology 251)
Why do muscles affect brain fog in menopause?
When muscles contract, they release myokines that stimulate BDNF — the protein responsible for growing new brain cells, strengthening memory and stabilising mood.Oestradiol also supports BDNF production directly.When both muscle activity and oestrogen decline in perimenopause, BDNF can drop — contributing to brain fog, memory changes and low mood.
Does MHT help with muscle loss in menopause?
Yes. MHT has direct protective effects on muscle mass and glucose metabolism by maintaining oestradiol's role in muscle protein synthesis and mitochondrial function.The evidence is strong and deserves to be part of any comprehensive conversation about menopausal health.
Why does menopause cause weight gain?
Menopause weight gain is closely linked to muscle loss.Muscle burns 3–5 times more energy at rest than fat.As oestrogen declines and muscle mass decreases, resting metabolic rate falls.Post-menopausal women also show a 25% reduction in muscle glucose uptake, contributing to insulin resistance.This is biology, not willpower.
What is the Musculoskeletal Syndrome of Menopause?
More than 70% of women experience musculoskeletal symptoms during the menopausal transition — joint pain, muscle weakness, body aches.These are now formally recognised as the Musculoskeletal Syndrome of Menopause.
(Wright et al., 2024, Climacteric 27(5))
Despite being highly prevalent, they remain routinely unrecognised and undertreated in clinical practice.
If this has made you think differently about your body, the Quick Reference Guide is your next step.
It covers the key things happening during the menopause transition — muscle, hormones, symptoms, and what you can actually do about it — in plain language, no jargon.
📚 Read the Full Series
The Extraordinary Secret Life of Your Muscles
"The Four Superpowers of Muscle in Menopause"
Part 1 — Brain: Your Muscles Are Talking to Your Brain
Part 2 — Metabolism: Your Muscles Are Your Metabolic Engine
Part 3 — Bones & Immunity: Your Muscles Are Protecting Your Bones and Immune System
Part 4 — Healthy Ageing: Your Muscles and the Art of Ageing Well
About Anna Pattison
Anna Pattison was a former Registered Nurse, is a Clinical Myotherapist and Menopause Mentor based in Melbourne, Australia.
She holds specialist menopause training through Newson Health, PCWHF and Impart, and is completing a Postgraduate Certificate in Menopause Medicine.
Anna is the founder of Menopause Hub — dedicated to making global, evidence-based menopause research accessible to every woman navigating this transition.
References
Erickson K.I. et al. (2011). Exercise training increases size of hippocampus and improves memory. PNAS, 108(7), 3017–3022.
Greising S.M. et al. (2020). Oestradiol's influence on skeletal muscle function and metabolism. Exercise and Sport Sciences Reviews, 48(4), 178–185.
Haines C.J. et al. (2024). Hormonal Influences on Skeletal Muscle Function in Women across Life Stages. Women, 3(3), 24.
Huang T. et al. (2024). Myokines May Be the Answer to the Beneficial Immunomodulation of Tailored Exercise. Biomolecules, 14(10), 1205.
Kostka M. et al. (2024). Muscle–Brain Crosstalk Mediated by Exercise-Induced Myokines. Frontiers in Physiology, 15, 1488375.
Richter E.A. & Hargreaves M. (2013). Exercise, GLUT4, and Skeletal Muscle Glucose Uptake. Physiological Reviews, 93(3), 993–1017.
Sipilä S. & Narici M. (2021). Skeletal muscle changes during menopause. Journal of Endocrinology, 251(3), R1–R17.
Wright V.J. et al. (2024). The musculoskeletal syndrome of menopause. Climacteric, 27(5), 466–472.
Zhang C. et al. (2024). Research progress on estrogen receptor and postmenopausal sarcopenia. Frontiers in Endocrinology, 15, 1494972.
© 2026 Menopause Hub | menopausehub.com.au
For educational purposes only. This is not medical advice. Please consult your healthcare provider about your individual situation.
Comments