Last updated 28 October 2026
Muscle is the organ of independence. It carries the shopping, climbs the stairs, catches you when you trip and gets you up off the floor. And from mid-life, unless you give it a reason to stay, it slowly leaves.
Muscle loss with age is the gradual decline in muscle mass and strength that comes with getting older. When it becomes severe enough to affect daily life, it is called sarcopenia. Strength falls faster than size. At around 75, people lose under 1% of their muscle mass a year but 2.5% to 4% of their strength (Mitchell et al., 2012). The good news is that muscle responds to training at any age.
This guide explains why muscle loss matters so much for a long life, how fast it happens, what the research says reverses it, and where protein and supplements fit in.
Strength is one of the clearest signals of how well you are ageing. In a study of almost 140,000 adults in 17 countries, every 5 kg lower grip strength was linked to a 16% higher risk of death from any cause over four years. The authors called grip strength a simple, inexpensive way to stratify risk (Leong et al., 2015).
That is because muscle does far more than move you. It is where much of your blood sugar is used, it protects your joints and bones, and it is what keeps you independent. Losing it is one of the main ways a long life turns into a frail one. Not lifespan, healthspan.
Muscle touches several of the five systems that shape how well we age, from metabolic health to energy production. It is also the main lever behind a better metabolic age.
Sarcopenia is muscle loss that has gone far enough to matter. The European working group on sarcopenia updated its definition in 2019. It now puts low muscle strength first, uses low muscle quantity or quality to confirm it, and treats poor physical performance, such as slow walking, as a sign that it is severe (Cruz-Jentoft et al., 2019).
The same group points out that sarcopenia is common in older age but can also start earlier in life (Cruz-Jentoft et al., 2019). It is not something that happens to other people at 85. It is a slow process that most of us are already somewhere along.
Slowly at first, then faster, and strength goes before size. A review of studies of ageing muscle found that inactive adults lose around 3% to 8% of their muscle mass each decade (Westcott, 2012). Another found that by around 75, the losses look like this (Mitchell et al., 2012).
| At around age 75 | Women | Men |
|---|---|---|
| Muscle mass lost each year | 0.64% to 0.70% | 0.80% to 0.98% |
| Strength lost each year | 2.5% to 3% | 3% to 4% |
The same review found that strength falls two to five times faster than muscle mass, and that loss of strength is the more consistent risk for disability and death (Mitchell et al., 2012). That is why it is worth training for strength, not just size.
Several things stack up, and most of them can be pushed back.
Yes, and it is never too late to start. In a famous 1990 study, ten frail nursing home residents with an average age of 90 did eight weeks of high-intensity strength training. Their strength rose by an average of 174%, their thigh muscle grew by 9%, and their walking speed improved by 48% (Fiatarone et al., 1990).
Bigger reviews back this up. A meta-analysis of 49 studies with 1,328 older adults found that resistance exercise reliably increased lean body mass, with higher-volume programmes doing more (Peterson et al., 2011). Another review reports that ten weeks of resistance training can add around 1.4 kg of lean weight and raise resting metabolic rate by about 7% (Westcott, 2012).
Muscle is the lever. Nothing else on this list comes close.
Less than you might think, but more than most people do. UK guidelines recommend that adults do activities that build strength on at least two days a week, and that older adults also include activities that improve balance (UK Chief Medical Officers, 2019).
Older adults need more protein, not less. An international expert group recommends that people over 65 eat at least 1.0 to 1.2 g of protein per kilogram of body weight a day, and 1.2 g or more if they exercise or are active (Bauer et al., 2013).
For someone who weighs 70 kg, that is roughly 70 to 84 g of protein a day. Spreading it across meals, and including protein in breakfast, makes it easier to reach. Speak to your GP before changing your diet if you have kidney disease.
Training and food come first. A few supplements have research behind them as support. AEVUM wrote this guide, and Daily Vitals does not contain any of these, so we have tried to be fair to each.
| Supplement | What research has looked at | What it found |
|---|---|---|
| Protein | Expert recommendations for people over 65 | At least 1.0 to 1.2 g per kg of body weight a day, from food or supplements (Bauer et al., 2013) |
| Creatine | A meta-analysis of 357 older adults doing resistance training | Greater gains in muscle mass, strength and function than training alone. The authors said more studies are needed (Devries and Phillips, 2014) |
| Vitamin D | Authorised nutrient role and UK advice | Contributes to the maintenance of normal muscle function (Great Britain NHC Register). Everyone should consider a daily supplement in autumn and winter (NHS) |
None of these replaces training. Creatine in the trials above was taken alongside resistance training, not instead of it.
Nothing in Daily Vitals builds muscle, and we do not claim it does. Daily Vitals is one simple daily step that sits alongside the foundations above, with ten ingredients.
What we can say is that vitamin C contributes to normal collagen formation for the normal function of bones and cartilage, and vitamin B1 (thiamine) contributes to normal energy-yielding metabolism (Great Britain NHC Register). The heavy lifting, quite literally, is still yours. You can see every ingredient on our ingredients page. Feel better now. Age better later.
See your GP if you notice weakness, falls, unexplained weight loss or muscle loss, or if everyday tasks like climbing stairs or getting up from a chair are becoming harder. These can have many causes, and some are treatable.
Speak to your GP before starting a new exercise programme if you have a heart condition, chest pain, dizziness or a recent injury. Speak to your GP or pharmacist before taking a new supplement if you take prescription medicines, have kidney disease, are pregnant or breastfeeding, or have a medical condition.
Sarcopenia is muscle loss with age that has gone far enough to affect strength and daily life. The current European definition puts low muscle strength first and uses low muscle quantity to confirm it (Cruz-Jentoft et al., 2019).
Inactive adults lose around 3% to 8% of their muscle mass each decade (Westcott, 2012). At around 75, strength is lost two to five times faster than muscle mass (Mitchell et al., 2012).
Yes. In one study, nursing home residents with an average age of 90 increased their strength by 174% after eight weeks of strength training (Fiatarone et al., 1990). Resistance exercise reliably increases lean mass in older adults (Peterson et al., 2011).
At least 1.0 to 1.2 g of protein per kilogram of body weight a day for people over 65, and 1.2 g or more for those who are active (Bauer et al., 2013).
Yes. In a study of almost 140,000 adults, every 5 kg lower grip strength was linked to a 16% higher risk of death from any cause (Leong et al., 2015).
Alongside resistance training, creatine led to greater gains in muscle mass and strength than training alone, but the number of studies is limited (Devries and Phillips, 2014).
Keep reading
Joint supplements and longevity, what the evidence shows
What is biological age, and can you slow it down?
Healthy ageing for men, why men age differently
References
Bauer, J. et al. (2013). Evidence-based recommendations for optimal dietary protein intake in older people, a position paper from the PROT-AGE Study Group. Journal of the American Medical Directors Association, 14(8), 542–559. doi.org
Cruz-Jentoft, A.J. et al. (2019). Sarcopenia, revised European consensus on definition and diagnosis. Age and Ageing, 48(1), 16–31. doi.org
Devries, M.C. and Phillips, S.M. (2014). Creatine supplementation during resistance training in older adults, a meta-analysis. Medicine and Science in Sports and Exercise, 46(6), 1194–1203. doi.org
Fiatarone, M.A. et al. (1990). High-intensity strength training in nonagenarians, effects on skeletal muscle. JAMA, 263(22), 3029–3034. doi.org
Great Britain Nutrition and Health Claims (NHC) Register. Department of Health and Social Care. gov.uk
Leong, D.P. et al. (2015). Prognostic value of grip strength, findings from the Prospective Urban Rural Epidemiology (PURE) study. The Lancet, 386(9990), 266–273. doi.org
Mitchell, W.K. et al. (2012). Sarcopenia, dynapenia, and the impact of advancing age on human skeletal muscle size and strength, a quantitative review. Frontiers in Physiology, 3, 260. doi.org
NHS. Vitamin D. nhs.uk
Peterson, M.D., Sen, A. and Gordon, P.M. (2011). Influence of resistance exercise on lean body mass in aging adults, a meta-analysis. Medicine and Science in Sports and Exercise, 43(2), 249–258. doi.org
UK Chief Medical Officers (2019). UK Chief Medical Officers' physical activity guidelines. Department of Health and Social Care. gov.uk
Westcott, W.L. (2012). Resistance training is medicine, effects of strength training on health. Current Sports Medicine Reports, 11(4), 209–216. doi.org
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