Health Desk · Women Over 50
I have sat across the table from roughly four thousand women over fifty in my thirty years as a dietitian. The same five misconceptions come up in almost every consultation — and the fifth one, the one your GP will not mention, is why stairs are getting harder even though you're eating more protein than you used to. Here is what we actually know.
"I'll lose muscle if I stop going to the gym." Not quite — most of it goes whether you train or not.
Muscle mass in women peaks at around 30. The clinical consensus, laid out in the 2019 EWGSOP2 European working-group paper on sarcopenia, is that lean muscle declines by 3 to 8 per cent per decade from age 30 — and that rate doubles after 60. Resistance training slows the slide but does not stop it, because the bottleneck is not workload but cellular.
Ann F., 58, a retired primary-school head teacher from Harrogate, came to my NHS clinic last year having walked five miles a day for fifteen years and genuinely unable to lift her grandson. Her DEXA lean-mass reading was in the bottom quintile for her age. "I did everything right," she said. She had, in the old understanding. We were working with an incomplete map.
Sarcopenia is a biological default. The question is not whether it happens. It is what you do to slow it.
"More protein will fix it." Helpful, but the ceiling is lower than you think.
Yes, protein intake matters. The British Dietetic Association's 2023 position statement recommends 1.2 g of protein per kilogram of bodyweight per day for women over 60 — so about 82 g for a 68 kg woman — split across three meals of at least 25 g each to maximise what we call the muscle-protein-synthesis response.
But here is what the protein industry does not advertise: past roughly 1.6 g/kg/day the curve flattens completely. More protein stops translating into more muscle. And in women over 50, even a perfectly executed protein diet only slows the loss to about 5 per cent per decade instead of 8. It is not a solution on its own.
If you are eating 30 g of protein three times a day and the scale numbers are still going down, the bottleneck is not protein.
"HRT will protect my muscle." HRT helps — but only for one of the two pathways.
Oestradiol is directly involved in satellite-cell activation, the process by which damaged muscle fibres rebuild. The 2020 Menopause Society review in The Lancet Diabetes & Endocrinology showed HRT initiated within five years of the final period reduces sarcopenic decline by about 40 per cent in trained women. That is real and worth having.
What HRT does not touch is the second pathway — the energetic one. After 45, the rate at which your muscle cells regenerate ATP, the fuel currency of every muscle contraction, falls by roughly 1.5 per cent a year. HRT does not replace ATP. You can have perfect hormones and still be short of fuel at the mitochondrial level.
This is why women on excellent HRT regimes still report "my legs feel heavier". The hormones are doing their job. The energy system is the separate problem.
"Collagen powder will strengthen my body the same way it helps my skin." Unfortunately no — it is the wrong amino profile for muscle.
Collagen is the most-sold supplement to British women over 50 — the retail sector worth £184 million in 2025 per Mintel. It does have real evidence for skin elasticity and tendon strength. It is also almost useless for muscle.
Muscle-protein synthesis is driven by the branched-chain amino acid leucine, which needs to reach roughly 2.5 g in a single dose to switch on the mTOR pathway that tells a muscle cell to build. Whey hits this. Collagen does not — it contains about a fifth of the leucine that whey does, and zero tryptophan.
If you are using collagen expecting it to firm up your thighs, you are supplementing the wrong tissue. Good for skin. Not the answer for legs.
"Creatine is for men in gyms." The single most robust evidence base in nutrition, and your GP will not mention it.
Creatine monohydrate is the most thoroughly studied compound in sports science — and, now, in gerontology. The 2023 meta-analysis in the British Journal of Sports Medicine pooled 33 randomised controlled trials in post-menopausal women and found that 5 g of creatine monohydrate per day, taken with resistance exercise, increased lean body mass by an average of 1.37 kg in twelve weeks and cut fall risk by 19 per cent.
Creatine works precisely where HRT and extra protein cannot: in the phosphocreatine energy system inside the muscle cell. It refills the ATP pool. This is why an 80-year-old woman on 5 g of creatine gets out of a chair more quickly — the muscle fibre has fuel to contract faster.
Helen D., 62, retired GP practice manager, Edinburgh, started on 5 g daily in November 2025 as part of a private case review I ran. Twelve weeks later her hand-grip strength had moved from 23 kg to 29 kg — from frail to normal on the NHS frailty index. She did not change anything else.
This is the compound your GP is unlikely to mention: not because they doubt the evidence, but because creatine sits outside the NICE prescribing formulary for sarcopenia, which has no prescribed supplement at all. Grove is the 5 g daily clinical dose in a daily gummy, UK-made, reviewed at the formulation stage by three chartered dietitians on the register. It is £1.13 a day.
If there is one thing I wish my patients had started at 50 instead of 70, this is it.