Menopause and muscle loss: what to do in the gym

Somewhere in your late forties the same weight on the bar starts to feel heavier, and your arms and thighs look softer even though the scale hasn't moved. That isn't your imagination. Muscle loss genuinely accelerates through perimenopause and the first years after your last period, and lifting is the one thing that reliably pushes back at any age.

What is actually happening to your muscle

Muscle mass starts drifting down from your thirties, roughly a few per cent per decade. In women that drift steepens around the last period, when oestrogen drops and stays low.

Oestrogen affects how muscle responds to a training session and how quickly it recovers afterwards. Without it, the same workout produces a slightly smaller response and takes longer to bounce back from. Less daily movement, broken sleep and a thinner protein intake usually arrive at the same time, and the effects stack.

Strength falls faster than mass does. That is why a woman can look much the same as she did five years ago and still struggle to get out of a deep squat or carry two bags up the stairs. Strength training gives that back first, often within six to eight weeks.

How heavy is heavy enough

The answer most people don't want: heavier than you think. One-kilogram dumbbells and endless repetitions send your muscle no signal at all. You need a load that makes the last two reps of a set genuinely hard.

In practice: 2 to 4 working sets per exercise, 6 to 12 reps, finishing each set feeling you had one to three more in you. When you can manage two more reps than last time, add weight — usually 2.5 kg on the big lifts, 1 to 2 kg on the small ones.

Machines are not a lesser option. If a knee is grumpy or your balance isn't what it was, a leg press and a chest-supported row will build plenty of muscle. Free-weight bars are still worth keeping because of what they do for bone, so if you can, keep a squat and a deadlift in the programme, even at modest loads.

What a week looks like

Two to three full-body strength sessions a week is enough for most women. Three beats two if you have the time; four is rarely necessary and often turns into a reason to do none.

Session A: squat or leg press, bench press or chest press machine, row, hip thrust, farmer's carry. Session B: Romanian deadlift, overhead press, lat pulldown or assisted chin-up, split squat, plank. Five or six exercises, 45 to 60 minutes.

Cardio goes alongside the lifting, not instead of it. Two sessions of 20 to 30 minutes a week plus 7,000 to 8,000 steps a day covers your heart, your weight and your mood. What actually changes in endurance across hormonal phases we've covered separately in the piece on cardio and female hormones.

If you're coming back after a long layoff, don't start with the full plan — the first six weeks have their own logic and there's a specific plan for them.

Protein: the number worth remembering

After menopause muscle responds less readily to a meal, so the amount that actually switches on muscle building is higher than it used to be. Aim for 1.6 to 2.0 grams of protein per kilogram of body weight a day. For a 70 kg woman that's 110 to 140 grams.

Distribution matters nearly as much as the total: 25 to 40 grams per meal, three or four times a day. Breakfast is usually the gap — coffee and toast gets you about five grams. Eggs, yoghurt, cottage cheese, fish, chicken and pulses with grains close it without much effort.

Creatine monohydrate at 3 to 5 grams a day is one of the few supplements with serious evidence behind it for strength and muscle mass. In postmenopausal women the evidence looks promising but isn't fully settled. It's neither medicine nor magic, but it's cheap and safe for most healthy people.

Aggressive dieting is the real enemy here. If you're losing weight, keep the deficit moderate, the protein high and the heavy sets in the plan — otherwise you lose exactly the tissue you're trying to protect.

Bone comes with the muscle

Bone density falls fastest in the first five to seven years after your last period. Bone responds to the same things muscle does: load, and impact.

Heavy squats, deadlifts and presses do part of the job. The other part comes from short bouts of hopping — 10 to 20 hops or small landings, three times a week, takes about a minute. Brisk walking and walking uphill count too.

Calcium and vitamin D sit alongside that; how much and from where is covered in the article on calcium and bone health in women. If you've been diagnosed with osteoporosis, clear hopping and deep spinal flexion with your doctor before you start.

Sleep, hot flushes and recovery

Night sweats wreck sleep, and poor sleep drags down both your strength and your willingness to turn up. That's a real physiological problem, not an excuse.

Practically: put your hardest sessions in the part of the day when you feel best, which for most women is late morning. If you slept four hours, don't cancel — drop one set per exercise and keep the weight. Every six to eight weeks, take an easier week with roughly half the usual sets.

Warming up matters more than it used to: five to ten minutes of easy movement plus two light ramp-up sets before your first working set. Joint pain that lingers for days means the load or the technique is wrong, not that you're too old to lift.

When to see a doctor

Some things the gym doesn't fix. See your GP for unusually heavy or prolonged bleeding, any bleeding after a full year without a period, or chest pain, breathlessness or dizziness on exertion.

The same goes if you've broken a bone in a minor fall, if joints hurt at rest, or if menopausal symptoms are seriously flattening daily life. Hormone therapy is a conversation with a clinician, not a decision to make off an article — and bone density scanning is recommended individually, based on your risk factors.

The short version

• Muscle loss speeds up around menopause; two to three full-body strength sessions a week is the most effective answer.
• Lift properly heavy: 2–4 sets, 6–12 reps, one to three reps left in reserve, and add weight regularly.
• Eat 1.6–2.0 g of protein per kilogram of body weight daily, split into 25–40 g across three or four meals.
• Bone needs impact as well as load: 10–20 hops three times a week, plus enough calcium and vitamin D.
• After a bad night, cut the volume rather than the session; bleeding after menopause or a fracture from a minor fall needs a doctor.