The hidden relationship between oestrogen, inflammation, cortisol and the changes so many women experience after menopause.
Sarah was 56.
It had been fourteen months since her last period and she'd assumed that meant the worst of menopause was behind her.
No more unpredictable cycles. No more wondering when her next period would arrive. Surely her body would begin to settle down now?
But something wasn't right.
Every morning, she woke with aching joints. Her knees complained when she walked downstairs and her fingers sometimes felt stiff when she first got out of bed.
Her shoulders were becoming increasingly uncomfortable, particularly after sitting at her desk.
Then there was her weight.
She wasn't eating dramatically differently from how she'd eaten ten years earlier. In fact, she was probably eating less.
Yet her waistline was expanding and the clothes she'd worn comfortably for years were becoming tight.
Then there are those hot flushes!
She'd expected them to disappear once her periods stopped, but they still arrived without warning, often in the middle of the night.
By morning, she was exhausted.
She began wondering whether this was simply what getting older felt like.
But what if there was more happening beneath the surface?
The word most women have never heard: Inflammaging
Inflammaging is a scientific term describing the low-grade, persistent inflammation that can develop as we age.
Unlike the inflammation that appears when we injure ourselves or fight an infection, this type can quietly persist without obvious signs.
Inflammation itself is not the enemy.
It's one of the body's essential protective and repair processes. Without it, we couldn't respond effectively to injury or infection.
The problem arises when inflammatory signalling remains elevated for long periods.
Researchers are increasingly interested in how this process contributes to age-related changes in metabolic health, blood vessels, muscles, joints and immune function.
And for women, the menopause transition introduces another important factor.
A significant change in hormonal signalling.
Oestrogen does far more than regulate menstruation
When most women think about oestrogen, they think about reproduction.
But oestrogen has important roles throughout the body.
Oestrogen receptors are found in the brain, bones, muscles, blood vessels and many other tissues.
Oestrogen helps influence:
Bone maintenance and remodelling
Fat distribution and metabolic regulation
Blood vessel function
Temperature regulation in the brain
Connective tissue and joint health
Some aspects of immune and inflammatory signalling
Before menopause, the ovaries produce substantial amounts of oestradiol, one of the body's most active forms of oestrogen.
As ovarian function declines, circulating oestradiol levels fall considerably.
After menopause, the body continues producing smaller amounts of oestrogens through other tissues, including the conversion of adrenal hormone precursors in fatty tissue.
So oestrogen doesn't disappear completely.
But the hormonal environment changes.
That change alone can influence how the body responds to everyday challenges.
For Sarah, this helped explain why she could feel so different despite having made no dramatic changes to her lifestyle.
Why do the joints suddenly start complaining?
Sarah had always been reasonably active.
She enjoyed walking and gardening, and she'd never thought much about her knees.
Now, getting out of a chair sometimes felt like an event in itself!
During and after menopause, changes in oestrogen may influence pain sensitivity, connective tissue, muscle function and inflammatory signalling.
Age-related changes in tendons, cartilage and fascia may also contribute.
Fascia is the connective tissue network that surrounds and supports muscles, organs and other structures throughout the body.
It helps tissues glide, transmit force and respond to movement.
Like other connective tissues, fascia changes with age. Reduced activity, previous injuries and changes in tissue properties can all affect comfort and mobility.
But here's something important.
Not every ache after menopause is caused by inflammation or low oestrogen.
Osteoarthritis, inflammatory arthritis, thyroid disorders, medication effects and other conditions can produce similar symptoms.
Persistent or worsening pain deserves proper assessment rather than being dismissed as an inevitable part of ageing.
Then there's cortisol: The body's stress-response hormone
Sarah had also noticed that she wasn't coping with stress quite as well.
Things she'd previously taken in her stride seemed to overwhelm her.
She was tired during the day but strangely alert when she went to bed.
And when she finally fell asleep, another hot flush would wake her.
This is where cortisol enters the conversation.
Cortisol is produced by the adrenal glands and helps regulate energy availability, blood pressure, immune responses and the body's reaction to stress.
We need cortisol. It's essential for life.
Normally, cortisol follows a daily rhythm, rising around waking and gradually declining towards the evening.
But ongoing stress and disrupted sleep can interfere with healthy stress-response patterns.
Menopause doesn't automatically mean cortisol levels are permanently elevated. However, persistent sleep disruption, psychological stress and changing health circumstances can affect the body's stress systems.
Chronic stress may also influence appetite, food choices, insulin sensitivity and inflammatory activity.
Here is where things become interconnected.
Poor sleep can increase fatigue and reduce motivation to move.
Reduced activity can contribute to muscle loss.
Changes in muscle mass and fat distribution can affect metabolic health.
Meanwhile, stress and sleep disruption can make it harder to maintain the routines that previously felt effortless.
It's rarely just one hormone causing one symptom. It's a whole-body conversation.
Why is the weight gathering around the middle?
Sarah found this particularly frustrating.
She'd always carried a little weight around her hips and thighs.
Now, it seemed determined to settle around her waist. This change is common during midlife.
Ageing can contribute to gradual weight gain through changes in activity, muscle mass and energy expenditure.
Menopause itself is particularly associated with a shift towards more abdominal fat.
This matters for many more reasons beyond how our clothes fit.
Visceral fat, the fat stored deeper within the abdomen around internal organs, is metabolically active.
Excess visceral fat can contribute to insulin resistance and increased inflammatory signalling.
That means changes in body composition can interact with the wider process of inflammaging.
But this is not an inevitable downward spiral.
Muscle can be maintained and strengthened.
Metabolic health can improve.
Changes to food quality, protein intake, movement, sleep and other daily habits can make a meaningful difference.
The aim isn't simply to make the scales move.
It is to support a healthier internal environment.
What about the lymphatic system?
Now we come to a part of the body that receives far less attention than it deserves.
The lymphatic system is an extraordinary network of vessels, lymph nodes and specialised tissues.
It helps return excess fluid from tissues to the bloodstream, transports certain dietary fats and plays an important role in immune surveillance.
Unlike the cardiovascular system, which has the heart as its central pump, lymph movement depends on several mechanisms, including muscle contractions, breathing movements and contractions within lymphatic vessels themselves.
This is one reason regular movement is so valuable.
When Sarah spent long periods sitting, she sometimes noticed her legs felt heavy and her ankles became a little puffy.
Could lymphatic circulation be part of the menopause picture?
Possibly, but swelling has many potential causes and should not automatically be attributed to sluggish lymph flow.
There is growing research into the relationship between lymphatic function, immune activity, tissue inflammation and ageing.
However, we don't yet have convincing evidence that menopause routinely causes lymphatic failure or that impaired lymph drainage explains typical menopausal weight gain.
What we do know is that regular movement, muscle activity and healthy circulation support normal fluid movement.
That gives us another reason to keep moving, even when we don't feel like exercising. in fact I feel that if you find an activity you love, then moving your body becomes a pleasure rather than a chore.
Hot flushes: When the body's thermostat becomes more sensitive
Sarah's hot flushes were another source of frustration.
Why were they still happening more than a year after her last period?
The answer lies largely in the brain.
The hypothalamus helps regulate body temperature, hunger, thirst, sleep and many other functions.
During the menopause transition, falling oestrogen affects neural pathways involved in temperature regulation, including pathways associated with neurokinin B.
The brain's comfortable temperature range becomes narrower.
Small changes in body temperature can trigger an exaggerated cooling response.
Suddenly, blood vessels near the skin widen, sweating begins and the familiar wave of heat arrives.
Hot flushes can continue for years after the final menstrual period.
When they repeatedly interrupt sleep, they can influence daytime energy, mood and quality of life.
This doesn't mean every hot flush is a sign of harmful inflammation.
It means the body's temperature-regulating system is responding to a changed hormonal environment.
So, what can Sarah actually do?
This is where I believe the conversation becomes much more hopeful.
We cannot stop time or prevent every hormonal change associated with ageing.
But we can influence many of the conditions in which our bodies function.
Often, the most useful changes are surprisingly simple.
Start with nourishment.
Choose foods that provide adequate protein, fats, vitamins and minerals.
Protein becomes particularly important as we age because maintaining muscle supports strength, mobility and metabolic health.
A low-inflammatory eating pattern is a very useful framework for reducing highly processed foods and improving overall food quality.
Others may prefer a more animal-based approach.
Whatever approach we choose, nutritional adequacy matters.
Protect sleep.
Sleep is not a luxury.
It plays an essential role in metabolic regulation, immune function, pain sensitivity and emotional wellbeing.
Persistent night sweats deserve attention because improving sleep may have benefits far beyond feeling more rested.
Keep moving.
Walking, resistance exercise and regular breaks from sitting can support muscle, bone health, circulation and metabolic function.
We don't need to exhaust ourselves.
In fact, consistency is generally more useful than occasional bursts of extreme exercise.
Support the stress response.
Spending time outdoors, practising relaxation, connecting with people and creating regular routines may help reduce the burden of chronic stress.
The aim isn't to eliminate cortisol.
It's to help our bodies respond appropriately to life's demands and recover afterwards.
Pay attention to changes.
Notice sleep, energy, digestion, mobility, strength and how you feel in your own skin.
And if symptoms are persistent, severe or unusual, investigate them rather than assuming they're simply part of menopause.
Six weeks later...
Let's return to Sarah.
Imagine she decided to stop fighting her body and start paying closer attention to what it needed.
She began eating regular, nourishing meals with sufficient protein.
She walked most days and gradually introduced gentle but effective strength exercises.
She made sleep a priority and began recognising the difference between being genuinely hungry and eating because she was exhausted and or stressed.
She also sought advice about her ongoing hot flushes and joint discomfort.
Would everything magically disappear in six weeks?
Maybe or maybe not.
After all our bodies don't work to marketing deadlines!
But six weeks can be enough time to establish better routines, notice some changes and begin understanding what helps.
Perhaps the most important change would be in how Sarah viewed her body.
Instead of believing it had somehow let her down, she could begin recognising that it was adapting to a major biological transition.
Menopause isn't the end of our opportunity to build health.
It's a time when understanding our bodies becomes even more valuable.
A final thought from Karen
After more than 40 years working in natural health, one thing continues to fascinate me.
The human body is constantly responding to its environment.
Our food, sleep, movement, stress, hormones and daily habits all contribute to that environment.
While we cannot control everything, we have far more opportunities to support our health than we sometimes realise.
Inflammaging is a fascinating area of research because it reminds us that ageing isn't simply about the number of birthdays we've celebrated.
It's also about the biological processes taking place within us.
The more we understand those processes, the better equipped we are to make informed choices.
Perhaps that's the real question we should be asking.
Not simply, "How do I lose this weight?"
But...
"What can I do today to help my body function better tomorrow?"
Because a resilient body isn't built in a day.
It's built through the choices we make, again and again.
Find your health. Lose the weight. Keep both.
Karen Creighton
Natural Health Practitioner | Fast Track to Health
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Note: Sarah is a fictional character representing experiences commonly reported around menopause. Her story is illustrative, not a clinical case study. This article is educational and does not replace individual medical assessment.
