- Perimenopause usually starts in the 40s; the average age of menopause in the UK is 51.
- Falling oestrogen shifts fat to the middle and speeds up muscle and bone loss.
- Strength training is the single most useful habit through this stage.
- HRT treats symptoms, not weight, but better sleep and energy can make fat loss easier.
What is actually happening
Menopause is the point when periods have stopped for 12 months. Perimenopause is the run-up, when hormone levels fluctuate and periods become irregular. It usually starts in the 40s, can last several years, and the average age of menopause in the UK is 51. Some women reach it earlier, including after surgery or certain cancer treatments.
As oestrogen falls, the body tends to store more fat around the abdomen rather than the hips and thighs. Muscle and bone are lost more quickly than before. Many women also experience hot flushes, night sweats, broken sleep, joint aches, low mood, anxiety and brain fog.
The frustrating part is that none of this happens in isolation. A woman who is sleeping badly, anxious and aching is less likely to feel like training and more likely to reach for something sweet at 4pm. The hormones matter, but much of their effect on weight comes through these knock-on changes.
Is weight gain inevitable?
Many women gain weight around this time, but it is not a law. Research suggests the menopause transition itself mainly changes where fat is stored, while overall weight gain is driven largely by the same things that affect everyone in midlife: less muscle, less movement, poorer sleep and changes in eating and drinking.
That is useful to know, because those things can be changed. It does not make it easy, but it does mean the effort you put into strength training, protein, sleep and daily steps is not wasted. Our guide to losing fat over 40 covers the wider midlife picture.
Strength training comes first
If there is one thing to prioritise through perimenopause and beyond, it is lifting weights. Resistance training helps hold on to muscle as oestrogen falls, improves insulin sensitivity, supports your joints and, importantly, loads your bones. Bone density drops quickly in the years around menopause, raising the risk of osteoporosis, and progressive strength training is one of the best ways to slow that down. Our guide on strength training and bone health explains why.
Aim for two or three sessions a week built around squats, hinges, pushes, pulls and carries, using weights that feel challenging by the last few reps. If you have never lifted before, start with bodyweight and dumbbells and build up. Some jumping or skipping, if your joints and pelvic floor tolerate it, adds useful bone loading.
Protein, fibre and alcohol
Protein needs go up rather than down with age, because muscle becomes less responsive to it. Aim for around 1.6 to 2.2 g per kg of body weight a day if you train, with 30 to 40 g at each main meal. Our protein for fat loss guide has practical ways to get there.
Fibre helps with fullness, gut health and cholesterol, all of which matter more now. Most UK adults fall well short of the recommended 30 g a day, so more beans, lentils, oats, vegetables and wholegrains is a good move. Calcium and vitamin D matter for bone health too, and the NHS advises everyone in the UK to consider a vitamin D supplement in autumn and winter.
Alcohol is worth looking at honestly. It adds calories, disturbs sleep and can trigger hot flushes in some women. Cutting back is often one of the easiest wins available.
Sleep and symptoms
Broken sleep makes fat loss much harder. Short sleep increases hunger and cravings, lowers your motivation to move and makes training feel tougher. Night sweats and waking at 3am are among the most common perimenopause complaints, so this is not a side issue.
- Keep the bedroom cool, and use layers you can throw off.
- Keep a regular wake-up time, even at weekends.
- Cut caffeine after lunchtime and limit alcohol, especially in the evening.
- Get daylight and some movement early in the day.
- Talk to your GP if sleep is consistently poor. It is a symptom worth treating.
Our guide on sleep and fat loss covers the link between sleep, appetite and body composition in more depth.
HRT and medical support
HRT (hormone replacement therapy) is the main medical treatment for menopause symptoms. It is not a weight loss treatment, and the evidence does not suggest it causes weight gain. For many women, though, it improves sleep, hot flushes, mood and joint pain, and that can make training and eating well far easier.
Whether HRT is right for you depends on your symptoms, history and preferences, and it is a conversation to have with your GP or a menopause specialist. The NHS website has clear information. You should not have to put up with symptoms that are affecting your quality of life.
See your GP promptly about any bleeding after menopause, very heavy or erratic bleeding, or new symptoms that worry you.
A realistic approach
Expect progress to be a little slower than it was at 30, and be kind to yourself about it. A moderate deficit of around 15 to 20% below maintenance, strength training two or three times a week, 8,000 or more steps a day and protein at every meal is a solid, sustainable plan. Judge it by your waist, strength and energy over three months, not just the scales.
Training alongside others helps on the days motivation is low. Lycan Strength has members of all ages training together in scalable classes, and its on-site physiotherapy covers women's health, with 20% off treatment for members.
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Questions
Why am I gaining weight around my middle in perimenopause?
Falling oestrogen shifts fat storage towards the abdomen. Poorer sleep, less muscle and changes in activity often add to it.
Does HRT cause weight gain?
The evidence does not suggest HRT causes weight gain. It treats symptoms, and better sleep and energy can make fat loss easier.
What is the best exercise during menopause?
Strength training two or three times a week, plus daily walking. Some impact work, if your joints and pelvic floor tolerate it, helps bone health.
How much protein should I eat during menopause?
Around 1.6 to 2.2 g per kg of body weight a day if you train, with roughly 30 to 40 g at each main meal.
General guidance for healthy adults. If you have a medical condition, injury or are pregnant, check with a health professional before changing your training or diet.
