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Weight loss in menopause: what works and what does not

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Lunarahealth
14 14 دقيقة قراءة
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Menopause does not make you heavier. It moves your fat. In the SWAN study, visceral belly fat rose by 6.24% per year once the transition began. Your weight, meanwhile, kept climbing gently through midlife with no acceleration at all (PMID 30843880, PMID 34061966).

That is the opposite of what you read almost everywhere. Nearly every article about weight loss in menopause opens by saying menopause causes weight gain. The best evidence we have says something else.

Your body really does change. The scale simply does not show it to you.

Whether you want to lose weight during the transition or after it, the biology underneath is the same. Below you will read what actually happens, what works to lose fat and keep muscle, and what you can safely skip.

What really changes in your body

Your fat mass starts growing about twice as fast. Your muscle mass flips from gain to loss. And your fat moves to your middle. Your total weight, meanwhile, does nothing remarkable: it rises gently through midlife, with or without menopause (PMID 30843880).

SWAN followed women for years with DXA scans, the most accurate measure of body composition we have. Just before the transition, fat mass grew by roughly 1.0% per year. Once the transition began, that doubled to roughly 1.7% per year (PMID 30843880).

At the same time, muscle mass reversed. Women had been gaining lean mass slightly, about 0.2% per year. After that point they lost it, about 0.2% per year.

On the scale, those two movements largely cancel each other out. Fat up, muscle down, and the number barely moves. That is exactly why your clothes fit differently while your weight stays the same.

The relocation of the fat is even more striking. Before the transition, visceral fat, the fat around your organs, did not change significantly. From the transition onward it rose by 6.24% per year (PMID 34061966).

Android belly fat followed the same pattern, from +1.21% to +5.54% per year.

What changesBefore the transitionFrom the transition onwardSource
Fat mass.About +1.0% per year.About +1.7% per year, a doubling.SWAN, PMID 30843880.
Lean mass, meaning muscle.+0.2% per year, a gain.-0.2% per year, a loss.SWAN, PMID 30843880.
Visceral fat, around your organs.No significant change.+6.24% per year.SWAN, PMID 34061966.
Android fat, meaning belly fat.+1.21% per year.+5.54% per year.SWAN, PMID 34061966.
Total body weight.Rises gradually.Keeps rising gradually, with no acceleration.SWAN, PMID 30843880 and PMID 27417630.
Waist and hip circumference as a measuring tool.A crude measure.Less sensitive to the shift than a DXA scan.SWAN, PMID 34061966.

Researchers summarise it like this. Changes in weight belong to chronological ageing. Changes in body composition and fat distribution belong to the ageing of your ovaries (PMID 27417630).

To be fair, it is not entirely black and white. A separate SWAN analysis over six years did find fat gain (+3.4 kg), muscle loss (-0.23 kg) and a waist that grew 5.7 cm (PMID 17192296). Both ageing and ovarian ageing contribute to that.

What stands is this: the story lives in the distribution, not in the number. Read more about that relocation in menopause belly, and why fat moves to your middle.

When weight loss should not be your goal

Weight loss is not a healthy goal for every woman, and sometimes it is plainly unwise. Have you had an eating disorder, are you pregnant, are you underweight, or do you use insulin? Then this article is not for you. Take your questions to your GP first.

Even without those situations, you are allowed to ask whether weight loss is the right goal. Dieting is the strongest predictor of a new eating disorder in adolescents (PMID 10082698). That risk does not vanish once you turn fifty.

So you will find no target weight here, no BMI goal, and no calorie number handed to you as a prescription. You will find principles, with the numbers attached, so you can weigh them yourself.

Are thoughts about food and your body starting to take over? Then stop trying to lose weight and speak to your GP.

Why the scale is the wrong instrument here

Because weight predicts poorly what fat distribution predicts well. In INTERHEART, with over 27,000 people, the link between BMI and heart attack disappeared after adjustment: odds ratio 0.98, not significant. Waist-to-hip ratio held up, with an odds ratio of 2.52 between the top and bottom groups (PMID 16271645).

An international consensus statement puts it bluntly. BMI alone is not sufficient (PMID 32020062). That is not word play, because it decides what you steer by.

And here I have to be honest about the tape measure. Your waist is a good risk marker. But it is a poor detector of change.

The same SWAN analysis that found the visceral fat rise also found that waist and hip circumference are less sensitive to this shift (PMID 34061966). A tape measure will not show you what menopause is doing to your fat distribution. Do not confuse those two things.

Why it matters: visceral fat rises by about 8.2% per year starting two years before your final period. That rise tracks with thickening of your carotid artery, independent of your BMI (PMID 33651741). And 13.7% of women developed new metabolic syndrome around the final period (PMID 18663170).

This is also where a blood test reaches its limit. Endocrine disease is a rare cause of weight change. A blood test does not tell you why the scale is stuck.

What a test does show is what the fat redistribution is doing to your health. Think fasting glucose, insulin, HbA1c, triglycerides, HDL cholesterol and your liver values. Those are the values in the complete metabolic panel, and they measure something your scale simply cannot see.

Which diet? The one you keep doing

No diet works better in menopause than the rest. In DIETFITS, a year-long study, low-carb and low-fat differed by only 0.7 kg. That was not significant. There was no effect of your genes and no effect of your insulin response on which diet worked (PMID 29466592).

That last point is the most important finding, and the least quoted. The promise that your hormones decide which diet suits you did not hold up in the largest test we have.

What did vary between people was how well they stuck to their plan.

So the question is not which diet is best. The question is which way of eating you will still keep two years from now, with your job, your family and your preferences.

The Schijf van Vijf from the Dutch Voedingscentrum is a fine basis for most women. No food is forbidden, and no food is magic. Read more about eating that can ease your symptoms in nutrition during menopause.

One approach clearly does not work on its own: exercising without changing what you eat. Over six to twelve months, exercise alone yields roughly 1.6 to 1.7 kg (PMID 21787904). That is no argument against moving, as you will read next, but against moving as your only lever.

Protein and strength training: your muscle is what is at stake

When you lose fat, you almost always lose muscle too. Protein and strength training are the two levers that limit that loss. In a deficit, the higher protein group held on to 0.43 kg more fat-free mass and lost 0.87 kg more fat (PMID 23097268).

A stricter training study pushed it further. Participants in a large deficit with high protein and hard training gained 1.2 kg of lean mass and lost 4.8 kg of fat (PMID 26817506). That population is not yours, but the direction is consistent.

For women after menopause, the evidence is weaker than you would like. A meta-analysis found that resistance training increased lean body mass in postmenopausal and elderly women (SMD 0.44, 95% CI 0.28 to 0.60) (PMID 33880736).

The caveats belong with it. These were observational studies, the strength of evidence was graded C, and the population mixed postmenopausal and elderly women together.

So it supports the claim that strength training increases lean mass. It does not support the claim that strength training prevents the muscle loss of menopause. That difference gets quietly erased online.

How much protein then? Athletes sit at 1.4 to 2.0 grams per kilo of bodyweight per day according to the ISSN, spread across meals at roughly 0.25 grams per kilo per meal (PMID 28642676). In a deficit, 2.3 to 3.1 grams per kilo of fat-free mass is often used (PMID 24092765).

Scale that to a reference bodyweight, not your total bodyweight. Fat tissue does not need protein. For most women that lands at roughly 1.6 grams per kilo, and around 2.0 grams per kilo if you lift seriously.

Strength training two to three times a week, with weights heavy enough that the last repetitions genuinely cost you effort. That is the core of it. For a woman over fifty, keeping muscle matters more than the number on the scale.

The deficit, and the pace

A deficit is a share of your own maintenance, not a fixed number. The familiar 500 kcal less means something very different for a woman of 55 kg than for a woman of 95 kg. A pace of 0.5 to 1.0% of bodyweight per week is the sensible range (PMID 21558571).

Going faster costs you muscle. That is exactly what you do not want to give up at this stage of life.

Never go below 1200 kcal per day. Eating that little makes it hard to reach your vitamins, minerals and protein. And the odds of keeping it up drop sharply.

The numbers above are not a prescription. They are a range, so you can recognise when someone promises you something that moves too fast.

Sleep, and what the research does and does not say

Sleep problems are the rule rather than the exception in menopause: 26% of women meet the criteria for insomnia (PMID 29445307). In experiments, poor sleep raised calorie intake by an average of 385 kcal per day (PMID 27804960). Tying those two findings together, however, is an assumption, not a finding.

First, what does hold up. Sleep problems track with your menopausal stage, and with changes in FSH and estradiol, over and above your age (PMID 29445307). Hot flushes cause measurable awakenings at night.

But hot flushes are not the only cause. Women without hot flushes also sleep worse as the transition progresses (PMID 28944165).

Then the honesty check. In objective sleep studies, sleep duration and time awake after falling asleep did not differ between transition groups (PMID 34081126). What women report themselves is bleaker than what the measurement shows.

The 385 kcal also comes from research on partial sleep deprivation (95% CI 252 to 517), in a population that was not women in menopause. Energy expenditure did not change in that work.

Here is the honest conclusion. No study shows that poor sleep during the menopause transition causes weight gain in that population.

Each link on its own is evidenced. The full chain is a plausible mechanism, not a proven fact. So treat your sleep because bad sleep wrecks your days, not because it is guaranteed to make you heavier.

Read more in menopause sleep problems and what they do to your appetite and in poor sleep in menopause.

The plateau: it is your hunger, not your metabolism

Almost everyone stalls, and almost everyone blames a slowed metabolism. The numbers point somewhere else. For every kilo you lose, your energy expenditure falls by about 20 to 30 kcal per day, while your appetite rises by about 100 kcal per day (PMID 29156185).

Hunger is therefore three to five times stronger than the metabolic effect. Your metabolism is not your opponent. Your appetite is.

That effect also lasts. A year after losing 13.5 kg, appetite hormones were still tilted toward hunger (PMID 22029981).

This is ordinary biology, not a character flaw. Your body defends its weight. That is an old and effective system, and it knows nothing of your plans.

The claim that your metabolism slows in menopause, by the way, rests on nothing. It is folklore. What is true is that you keep less muscle if you do nothing, and muscle uses energy.

Is it your hormones?

Less than the internet tells you. In SWAN, only cholesterol, LDL and apoB jumped around menopause. Glucose, insulin, blood pressure and CRP simply followed chronological age (PMID 20082925). So menopause does not make you insulin resistant on its own.

Any effect on your insulin sensitivity appears to run through visceral fat, not directly through your hormones. That distinction matters. It means the lever you pull is fat distribution.

Want to know what insulin resistance looks like in women, and which values belong with it? That is covered in insulin resistance in women.

Then the cortisol belly. It does not exist the way it is sold to you.

Search for menopause and weight loss and you will mostly find supplements that claim to support your adrenals. A systematic review of 58 studies concluded, in so many words, that adrenal fatigue does not exist (PMID 27557747). That is precisely the concept those products lean on.

What has been found is this: in some women, cortisol rises in the late transition (PMID 19322116). That is all it shows. It does not show that cortisol drives your belly fat, and it justifies no supplement at all.

One hormonal cause is real, although rare: an underactive thyroid. Read how to tell it apart from menopausal symptoms in a slow thyroid and menopause.

What oestrogen does and does not do for your weight is set out in hormones and weight loss. Which values shift in this phase is covered in hormone balance in menopause.

Does hormone therapy make you gain weight?

No. A Cochrane review of 22 randomised trials found no significant weight difference with or without hormone therapy. Oestrogen alone gave +0.66 kg (95% CI -0.62 to +1.93). Oestrogen with a progestogen gave -0.47 kg (95% CI -1.63 to +0.69), and neither was significant (PMID 10796730).

That review is old, its search ran only to 1998. So it needs a newer one beside it.

An analysis of 107 randomised trials found that hormone therapy reduced abdominal fat by 6.8% (95% CI -11.8 to -1.9). HOMA-IR also fell by 12.9%, and there was less new-onset diabetes (RR 0.7) (PMID 16918589).

Fear of gaining kilos is therefore a poor reason to turn down effective treatment. The full story, nuances included, is in does hormone therapy cause weight gain and in hormone therapy in menopause.

Plan your maintenance before you start

Maintenance is not a rest phase. It costs a permanent 300 to 500 kcal per day of behaviour: eating less, moving more, or both (PMID 29156185). That is the bill almost nobody shows you in advance.

It can still be done. In Look AHEAD, 27% of participants were still holding a loss of more than 10% after eight years (PMID 24307184).

The best-evidenced behaviour is self-monitoring, meaning tracking what you eat and how it is going (PMID 21185970). Note this: with a history of disordered eating it is advised against. Choose a different route with your GP instead.

Ask yourself one question before you begin. What part of this plan will I still be doing in two years?

What you cannot answer, you are better off not starting. What you can sustain is also described in weight gain in menopause.

When this article is not for you

Weight loss is not a healthy goal for everyone. Do not follow this article if you have or have had an eating disorder, are pregnant or breastfeeding, are underweight, use insulin, or have had bariatric surgery. Speak to your GP first.

If thoughts about food or your body start to take over, talk to your GP or contact an eating disorder helpline. That is not weakness. That is sense.

Your first step this week

Pick one thing, not seven. Put two strength sessions in your calendar this week, with a day between them, and place a protein source on your plate at every meal. That is the intervention with the best return for your body composition.

Want to see what the fat redistribution is doing to your health? Have your fasting glucose, insulin, HbA1c and lipids measured in the complete metabolic panel, then repeat it in six months. Not to discover why the scale is stuck, but to track what is changing beneath the surface.

Not sure whether your symptoms belong to menopause or to something else? Start with Thuisarts or call your GP. More background on this phase is in perimenopause: symptoms and solutions.

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