- British Menopause Society. Menopause: Nutrition and Weight Gain. https://thebms.org.uk/wp-content/uploads/2023/06/19-BMS-TfC-Menopause-Nutrition-and-Weight-Gain-JUNE2023-A.pdf
Why Is This Happening?
Over half of women experience significant body composition changes during perimenopause and menopause. The average weight gain during the perimenopause transition is around 1.5kg per year, adding up to roughly 10kg by the time menopause arrives — though there's considerable variation between individuals.
It's worth noting that some of this weight gain is related to ageing rather than menopause specifically: longitudinal studies suggest roughly 0.5kg per year of weight gain is age-related, occurring in both men and women at midlife. But what's clearly driven by menopause — and more clinically significant — is the shift in body composition that happens alongside it.
Oestrogen and your metabolism
Oestrogen doesn't just regulate your menstrual cycle. It plays a role in how your body uses calories, where it stores fat, and how efficiently it burns energy. As oestrogen levels fall, lean muscle mass decreases — and muscle is metabolically expensive, meaning it burns calories even at rest. Losing it lowers your basal metabolic rate, which researchers estimate falls by around 200–250 calories per day at menopause as a result of this decline in lean mass.
Falling oestrogen levels are also associated with reduced insulin sensitivity — meaning your cells become less responsive to the hormone that regulates blood sugar. The pancreas compensates by producing more insulin, and higher circulating insulin levels promote fat storage, particularly around the abdomen.
Elevated cortisol, which can result from disrupted sleep and the physiological stress of the transition itself, compounds this further: cortisol promotes visceral fat accumulation.
The sleep cycle
Night sweats and insomnia — which affect a large proportion of women in perimenopause — create a vicious cycle. Poor sleep disrupts hunger hormones (leptin and ghrelin), making you hungrier and more drawn to high-calorie foods, and less able to sustain exercise. Managing sleep symptoms is not a cosmetic concern; it directly affects metabolic health.
Where Does the Weight Go?
Even women whose overall weight changes little often notice a shift in shape: fat moves from the hips and thighs (gynoid distribution) toward the abdomen (android distribution). Radiological imaging research consistently shows that postmenopausal women have greater amounts of intra-abdominal, or visceral, fat compared to premenopausal women — and that this shift occurs during the perimenopause itself, not just after.
This matters because visceral fat is metabolically active. It releases inflammatory cytokines and adipokines that can disrupt insulin signalling, raising the risk of type 2 diabetes, cardiovascular disease, and hypertension. These are real risks — worth taking seriously — but they are risks to manage, not inevitable outcomes.
Will It Stop?
The changes are most pronounced during perimenopause and in the first two years after the final menstrual period. After that, the rate of change typically slows, and many women find their weight stabilises. It doesn't continue indefinitely.
There is significant individual variation — some women experience rapid changes over two or three years, others more gradual ones over a longer period. Perimenopause itself can last anywhere from four to ten years.
What Actually Helps
The evidence base for weight management interventions specifically in perimenopausal and menopausal women is more limited than we'd like. But what high-quality studies do support is this: calorie reduction combined with exercise, including strength training, is the most effective strategy for long-term weight and body composition management in this group. Approaches like ketogenic diets, intermittent fasting, and time-restricted eating are widely discussed but have not been robustly evaluated in menopausal cohorts, and lack long-term efficacy data in this population.
Strength and resistance training
This is probably the single most important change you can make. Resistance exercise is the most efficient method for increasing muscle mass and raising your metabolic rate. More muscle means more calories burned at rest — which directly counters the metabolic slowdown of the transition. It also supports bone density, which is particularly important given the increased osteoporosis risk post-menopause.
You don't need a gym membership. Squats, press-ups, resistance bands, body-weight exercises twice a week are effective. Yoga and Pilates contribute to strength, flexibility, and stress management — which in turn helps with the cortisol picture.
The NHS recommends 150 minutes weekly of moderate-intensity activity as a baseline. For menopausal women managing body composition, adding two sessions of resistance exercise is strongly supported by evidence.
Nutrition
Calorie needs decrease with age and with the loss of lean mass. Making food choices more intentional matters — but crash diets and extreme calorie restriction are counterproductive. Fad diets cause muscle loss alongside fat loss, which worsens the metabolic situation long-term, and produce the classic yo-yo effect.
Prioritising protein at each meal helps preserve muscle, supports satiety, and boosts the thermic effect of food. Including adequate carbohydrates, particularly when exercising, is essential — cutting carbs severely while trying to increase muscle mass works against you. Vegetables, fibre, and lower-glycaemic choices across the board are well-supported by evidence.
The only supplement specifically recommended for women in perimenopause and menopause by the BMS is a daily 10 micrograms (400IU) of vitamin D.
Alcohol is calorically dense (almost as calorie-dense as fat), disrupts sleep, and can drive appetite for high-calorie foods. It's worth being aware of this, even if moderation rather than abstinence is more realistic for most people.
Should We Talk About HRT?
HRT is not a weight-loss treatment, and it shouldn't be presented as one. It will not cause a meaningful change in the number on the scales.
What the evidence does suggest is more specific: oestrogen therapy may help attenuate the shift toward abdominal fat accumulation that occurs during the menopausal transition, and may help preserve lean muscle mass. Some studies show that women on HRT have lower rates of visceral fat increase compared to controls, even when overall weight change is similar between groups. The evidence is not uniform across all formulations and study designs, and effect sizes are modest.
Where HRT can have a meaningful indirect effect on body composition is through sleep and energy. If it reduces night sweats and improves sleep quality, it supports the hormonal environment that governs hunger and recovery — making it easier to exercise consistently and make sustainable dietary choices.
If you have menopause symptoms affecting your sleep, mood, or quality of life, these are good reasons to discuss HRT with your GP or a menopause specialist. The NHS provides guidance on HRT options and side effects if you'd like to read more before your appointment. Ask: "I'm experiencing menopause symptoms including poor sleep and changes in body composition. Can we discuss whether HRT might be appropriate for me?"
When to See Your GP
Menopause-related weight and body composition changes are, in most cases, a normal physiological process. But it's always reasonable to seek assessment, particularly if:
- You've gained weight rapidly (more than around half a stone in a few months) without a clear explanation
- You have symptoms alongside weight gain: excessive thirst, frequent urination, extreme fatigue
- You have a family history of type 2 diabetes or cardiovascular disease
- Your waist circumference is increasing — a measurement at the belly button of over 80cm is worth discussing with your GP
- Weight changes are having a significant impact on your mental health
Your GP can check blood pressure, fasting glucose, cholesterol, and thyroid function. An underactive thyroid, which is more common in women at midlife, causes weight gain and can mimic or exacerbate menopause symptoms.
What to Remember
Weight changes during menopause are real, common, and rooted in biology — not personal failure. The more significant concern is the shift in where fat is distributed, rather than weight gain alone, and this is something you can meaningfully address.
The evidence-backed approach is not glamorous: resistance training twice a week, sufficient protein, sustainable calorie awareness, stress management, and quality sleep. HRT can support this, particularly by improving sleep, but it isn't a shortcut.
Be patient with your body. It is navigating one of the most significant hormonal transitions of your life. Small, consistent changes compound. Crash interventions don't.
DisclaimerAt Voy, we ensure that everything you read in our blog is medically reviewed and approved. However, the information provided is not meant to replace professional medical advice, diagnosis, or treatment. It should not be relied upon for specific medical advice.
References
¹²- Davis SR et al. Understanding weight gain at menopause. Climacteric. 2012;15(5):419–29. https://www.tandfonline.com/doi/full/10.3109/13697137.2012.707385
³- World Obesity Federation. Weight gain at the time of menopause. https://www.worldobesity.org/news/blog-weight-gain-at-the-time-of-menopause
