What Happens to Your Body During Menopause? What New Research Reveals
10/27/20266 min read
A major 2026 study found that menopause is associated with changes across the body. But does that mean your health suddenly falls off a cliff? Here’s what the research actually tells us — and what you can do with that information.
Not sure where to start? Use our Menopause Symptoms Tracker to note changes in your sleep, mood, energy and more.
If you’ve been feeling that menopause affects far more than your periods, you’re not imagining it.
Changes in sleep, energy, mood, body composition and skin can make it feel as though your body is speaking a different language. Yet many women are still told that menopause is simply the end of menstruation.
A large study published in Nature Medicine in October 2026 adds to our understanding of how wide-ranging this transition can be. Researchers described their findings using a striking phrase: a “physiological cliff”.
That phrase may sound frightening. But it’s important to understand what the researchers meant — and what their study did not prove.
What did the menopause study look at?
Researchers analysed more than 300 million laboratory test results from over one million women in the United States and Israel.
They used a statistical method to estimate how different measurements changed in relation to the final menstrual period, rather than looking at age alone.
In the US dataset, 52 of the 90 types of laboratory measurements showed a statistically significant abrupt change around the final menstrual period. These included measures related to hormones, bone metabolism, blood fats, and liver and kidney function.
That doesn’t mean that 52 things suddenly went wrong in every woman’s body. It means researchers identified changes in population-level patterns across these measurements. Nature Medicine
What does “physiological cliff” mean?
The researchers used the word cliff to describe what appeared in their statistical analysis: some biological measurements changed more sharply around the final menstrual period than would be expected from a slow, steady change with age.
But “physiological cliff” is a metaphor, not a diagnosis.
It does not mean that your body suddenly stops working, that you will become ill, or that every woman experiences a dramatic overnight change.
Menopause is a natural biological transition. Understanding its effects can help us make informed choices — it does not have to make us afraid of our bodies.
Can hormonal changes begin many years before menopause?
Yes. The researchers identified changes in some hormone patterns more than a decade before the final menstrual period.
Their analysis suggested that:
Anti-Müllerian hormone, or AMH, began declining more rapidly around 15 years before the final period.
Follicle-stimulating hormone, or FSH, began rising more rapidly around 14 years before it.
Estradiol, a form of oestrogen, began declining more rapidly around 12 years beforehand.
These are estimated patterns across groups of women. They do not mean that every woman develops symptoms or enters perimenopause 15 years before her final period.
Hormone levels can fluctuate considerably, particularly during perimenopause. Your experience may look very different from someone else’s — and a single blood test cannot reliably predict exactly when your final period will happen. Nature Portfolio
Hormonal changes and symptoms can look different throughout your 40s and early 50s. Explore how perimenopause symptoms can change from age 40 to 50.
Does menopause affect bone health?
Oestrogen plays an important role in maintaining bone. As levels fall during the menopause transition, bone loss can accelerate.
Over time, lower bone density can increase the risk of osteoporosis and fractures. However, a change in a laboratory marker is not the same thing as a diagnosis of osteoporosis.
The good news is that there are practical ways to support your bones:
Include resistance training suited to your ability.
Add appropriate weight-bearing activity, such as walking or other exercise you enjoy.
Make sure your diet includes enough protein and calcium.
Discuss vitamin D and whether you need a bone health assessment with your healthcare professional.
If you have osteoporosis, a history of fractures or another health condition, ask for individual guidance before starting high-impact exercise.
Alongside strength training, getting enough protein can support your muscles and bones as you age. Find out more about protein intake during menopause.
What about heart health?
Cardiovascular risk becomes increasingly important in midlife. Changes in blood pressure, cholesterol, body composition and other factors can influence heart health as we age.
The menopause transition may contribute to some of these changes, but this does not mean that every woman will develop heart disease.
Rather than focusing on one hormone number, it can be helpful to look at the wider picture:
Know your blood pressure and cholesterol levels.
Move regularly in ways you enjoy.
Include both cardiovascular activity and strength training.
Avoid smoking and seek support if you want to stop.
Discuss your family history and personal risk with your GP.
A conversation with your healthcare professional can help you decide which checks are appropriate for you.
What did the study find about HRT?
The researchers observed that women using menopausal hormone therapy — also called HRT — showed smaller changes in several laboratory measurements, particularly those associated with bone, liver and kidney function.
This is interesting, but it needs to be interpreted carefully.
The study was observational. Women who used HRT may have differed from women who did not in ways that could also influence their health. So, although the findings suggest a relationship, they do not prove that HRT caused the differences or prevented disease. Nature Medicine
HRT can be an effective treatment for menopause symptoms, especially hot flushes and night sweats. It can also help prevent bone loss while it is being taken.
But HRT is not the right choice for everyone, and it is not currently recommended solely to prevent cardiovascular disease. The benefits and risks depend on factors such as your health history, age, symptoms, the type of treatment and how it is taken. Guidance
If you have a womb and take systemic oestrogen, you will generally also need a progestogen to protect the womb lining. Your healthcare professional can explain which options are appropriate for you.
Is there an ideal oestrogen level every woman should aim for?
You may have seen social media posts suggesting that every woman should aim for a specific estradiol number.
There is no single, universally established estradiol target that guarantees better health for all women.
A result also needs a unit of measurement: for example, pg/mL and pmol/L are different units and cannot be compared as though they were the same number.
During perimenopause, hormone levels can vary considerably. For women using HRT, the meaning of a single blood result can depend on the type of treatment, timing and individual circumstances.
The British Menopause Society highlights uncertainty around interpreting one estradiol measurement. Testing can sometimes be useful in specific clinical circumstances, but it should be considered alongside symptoms, treatment and medical history. thebms.org.uk
If you’re considering a private test, talk to your GP or menopause specialist first about whether it would answer a useful question for you.
Can nutrition replace hormones?
Good nutrition cannot reproduce everything ovarian hormones do. But that doesn’t make food and lifestyle unimportant.
Eating enough protein, getting adequate calcium, moving regularly and looking after your sleep can support your muscles, bones and overall wellbeing through midlife.
For some women, HRT may be a useful part of their care. Others may prefer or need different approaches. You deserve a conversation that considers your symptoms, your health and your preferences.
What are the limitations of the research?
This was a very large study, but size alone cannot answer every question.
The researchers used existing data and a mathematical method to reconstruct patterns around the final menstrual period. It was not a study that followed every participant through menopause with the exact date of her final period recorded.
The results tell us about patterns across populations. They cannot predict exactly what will happen to one individual woman, and they do not establish that menopause or HRT directly caused every difference observed. Nature Medicine
More research is needed to understand how these findings should influence individual care.
What can you do now?
You don’t need to overhaul your life because of one headline. Instead, start with a few useful questions:
How am I feeling? Note any symptoms that are affecting your sleep, mood, work, relationships or daily life.
When did I last check my blood pressure and cholesterol? Ask your GP which checks are right for you.
Am I supporting my muscles and bones? Consider small, realistic steps with strength training, movement and nutrition.
Would I like to discuss treatment? If symptoms are bothering you, ask about HRT and non-hormonal options.
Do I have questions about my personal risks? Family history, previous conditions and medications all matter.
You are allowed to ask for support even if your symptoms don’t look like someone else’s.
The takeaway
This study adds to a growing picture of menopause as a transition that can affect many systems in the body — not just the reproductive system.
The word “cliff” makes a powerful headline, but it does not define your future. Menopause is not a guarantee of illness, and you do not have to chase a single hormone number to take care of yourself.
Your body is changing. That doesn’t mean it has stopped being worthy of trust, care and attention.
Hormonal changes can begin before your final period, but symptoms and timing vary from woman to woman. Learn more about perimenopause symptoms by age.
Sources
Pridham et al., Nature Medicine: Population-scale reconstruction of menopause dynamics
British Menopause Society: Measurement of serum estradiol in the menopause transition
US Preventive Services Task Force: Hormone therapy for primary prevention
Want to feel more informed and supported through midlife? Explore Menopause Is Not the End, my wellness guide for women who want to thrive, not just get through.
This article is for educational purposes and is not a substitute for personalised medical advice.