Search for sarcopenia supplements and you will find two internets. One sells a stack of eight products to anyone over 60. The other says none of it works. Neither is much help if you are the person who has started using their arms to get out of a chair, or the adult child who noticed a parent gripping the handrail on the stairs.
Here is what the evidence supports, in the order it deserves your attention, with the trials and the numbers behind each one.
The short answer
- Sarcopenia is defined by strength, not by the bathroom scale. European consensus criteria put low muscle strength first, with low muscle mass confirming it.
- Resistance training is the treatment. Supplements move the needle around it, and in the classic trial in frail 87 year olds, a nutritional supplement without exercise did nothing.
- Protein is necessary but not sufficient: at least 1.0 to 1.2 g/kg a day, but in non-frail older adults, protein without training has been null in meta-analyses.
- Creatine has the strongest supplement evidence, at 3 to 5 g a day alongside training, though it was tested in healthy older adults rather than in people already diagnosed with sarcopenia.
- Vitamin D corrects a deficiency and little else. High doses increased falls in several trials, and US Preventive Services Task Force guidance recommends against taking it to prevent falls in people not known to be deficient.
- HMB is marketed hardest and supported least in healthy older adults.
What sarcopenia actually is
Sarcopenia is the age-related loss of muscle mass and strength, and in 2019 the European Working Group on Sarcopenia in Older People changed the emphasis in a way that has not reached consumer articles: low muscle strength is now the primary characteristic. Low muscle quantity or quality confirms the diagnosis, and poor physical performance indicates that it is severe. The Asian Working Group for Sarcopenia reached a similar position in its 2019 update and published a full set of numeric cut-points, which is why those numbers get quoted so often. They were derived in Asian populations, and a pooled analysis of US cohorts set the grip threshold higher, so what counts as low depends on which group's criteria your clinician uses.
That reordering matters for anyone shopping for a supplement. A bathroom scale, and even a body composition scan, measures the thing that was demoted. What predicts falls, hospitalization and death is weakness. In a pooled analysis of eight cohort studies covering more than 13,000 men and 4,800 women, low grip strength was associated with later falls, hip fracture, mobility limitation and mortality, while lean mass measured by DXA was not consistently associated with any of them.
It is common. Depending on the definition used, prevalence across 151 studies ran between 10 and 27 percent in adults over 60. And the consequences are serious: a meta-analysis of prospective studies found sarcopenia roughly tripled the odds of dying (pooled odds ratio 3.6) and tripled the odds of functional decline, and a larger 2022 analysis of 56 studies put the mortality hazard ratio at 2.0, independent of which definition was used.
Three checks you can do this week
You cannot diagnose yourself, but you can find out whether this conversation is worth having with your doctor. These are the measurements the consensus groups use, with the thresholds they published.
| Check | What it measures | Result worth acting on |
|---|---|---|
| Grip strength | Muscle strength, the defining feature | Below about 28 kg for men or 18 kg for women on a hand dynamometer (Asian Working Group 2019). A US pooled analysis used below 35.5 kg for men and 20 kg for women. |
| Five-times sit-to-stand | Leg strength and power | Taking 12 seconds or longer to stand up from a chair five times without using your arms. |
| Walking speed | Physical performance; severity | Slower than 1.0 meter per second over 6 meters. A pooled US analysis treated below 0.8 m/s as slowness. |
| SARC-F questionnaire | A five-question screen | A score of 4 or more. Useful as a prompt, not a diagnosis: it misses about half of cases or more, with sensitivity of 29 to 55 percent depending on the diagnostic criteria it was tested against. |
Cut-points from the Asian Working Group for Sarcopenia (2019) and a US pooled cohort analysis. Grip strength needs a dynamometer, which many clinics and gyms have.
Rule out the other causes first
Weakness and muscle loss in an older adult are not automatically sarcopenia. Thyroid disease, anemia, vitamin B12 deficiency, heart failure, kidney disease, depression, undiagnosed cancer and the side effects of common medications all produce the same picture, and several of them are treatable. Unintentional weight loss, weakness that came on over weeks rather than years, or new difficulty swallowing deserve a medical appointment, not a supplement order.
This matters more than it sounds. Supplements marketed for muscle loss are sold directly to the group most likely to have an untreated medical cause, and the shopping can delay the diagnosis.
The one thing that decides whether any of this works
Resistance training is not the boring preamble to the supplement section. It is the intervention with the large effects, and it changes what every supplement below does.
A Cochrane review of 121 trials in 6,700 older adults found progressive resistance training produced a large improvement in muscle strength across the 73 trials that measured it (standardized mean difference 0.84), a modest improvement in gait speed (0.08 meters per second), and a moderate to large improvement in the ability to get out of a chair (standardized mean difference 0.94). A meta-analysis of 22 trials in adults aged 75 and over found resistance training increased muscle strength (effect size 0.97) and whole-muscle size (0.30), and in the subgroup aged 80 and over the strength gain still held (1.28), while grip strength and muscle fiber size did not reach significance. In the trial everyone in this field cites, 100 nursing home residents averaging 87 years old were randomized to resistance training, a multinutrient supplement, both, or neither: strength rose 113 percent in those who trained and 3 percent in those who did not, and the supplement had no effect on any primary outcome.
It carries through to outcomes people care about. In the LIFE trial, 1,635 sedentary adults aged 70 to 89 with physical limitations were randomized to structured physical activity or health education; major mobility disability, defined as losing the ability to walk 400 meters, occurred in 30.1 percent versus 35.5 percent over an average of 2.6 years. A separate Cochrane review of 108 trials found exercise reduces the rate of falls by 23 percent, pooled across the 59 trials that reported fall rates. The fall-specific benefit came from balance and functional work (24 percent) or from programs combining several types of exercise (34 percent), and the same reviewers said they were uncertain about resistance training on its own for falls, so pair the lifting with balance work rather than treating it as fall protection by itself.
Protein: the numbers that matter
The RDA of 0.8 grams per kilogram is a floor built to prevent deficiency, and expert groups have argued for years that older adults need more. The PROT-AGE study group recommends at least 1.0 to 1.2 grams per kilogram per day for healthy older people, 1.2 or more for those who exercise, and 1.2 to 1.5 for most older adults with acute or chronic disease. Severe kidney disease is the stated exception, and PROT-AGE draws it narrowly: an estimated glomerular filtration rate below 30 in someone who is not on dialysis. People on dialysis fall outside that exception and generally need more protein, not less, so get the number from the clinician managing your kidneys. Our protein guide covers the general targets; the table below is the sarcopenia-specific version.
| Body weight | Healthy older adult (1.0 to 1.2 g/kg) | Active, ill or recovering (1.2 to 1.5 g/kg) | Per meal (0.4 g/kg) |
|---|---|---|---|
| 120 lb (54 kg) | 54 to 65 g | 65 to 82 g | about 22 g |
| 150 lb (68 kg) | 68 to 82 g | 82 to 102 g | about 27 g |
| 180 lb (82 kg) | 82 to 98 g | 98 to 122 g | about 33 g |
| 200 lb (91 kg) | 91 to 109 g | 109 to 136 g | about 36 g |
| 220 lb (100 kg) | 100 to 120 g | 120 to 150 g | about 40 g |
Per-meal figure from a retrospective analysis in which muscle protein synthesis plateaued after about 0.40 g per kg of body mass in older men, against 0.24 in younger men, a difference that fell just short of statistical significance (p = 0.055). The comparison that did reach significance was per kg of lean mass, 0.60 against 0.25. Treat 0.4 g/kg as a reasonable working target, not a settled threshold. Ask your doctor for a target if you have kidney disease.
Then the uncomfortable part. In non-frail community-dwelling older adults, protein supplementation has repeatedly come out null: across 36 studies and 1,682 participants it showed no significant effect on lean body mass, grip strength, lower-extremity strength, gait speed or chair-rise ability, and the same review found no added benefit when protein was layered on top of resistance training either. A meta-analysis of eight trials in 557 people, six of which were also pooled at the individual participant level, found the same for protein or amino acid supplements. A third review of 28 studies found no effect overall, but a significant effect on appendicular lean mass and grip strength when the protein was combined with resistance exercise, with that appendicular lean mass effect reaching significance only in the sarcopenic and frail subgroup.
That is the pattern across most of this literature, though not all of it, as that null result even alongside training shows. Where the pooled gain in appendicular lean mass did show up, it showed up only in the sarcopenic and frail subgroup, which is the group this guide is written for. A meta-analysis of 49 trials in 1,863 people found protein added to resistance training produced real but modest gains, about 2.5 kg on a one-rep max and 0.30 kg of fat-free mass, with the fat-free mass benefit shrinking as age rose. A 2022 review found the benefit for people over 65 showed up at intakes of 1.2 to 1.59 g/kg a day when they were training.
One trial is worth knowing about because it is the exception people cite: PROVIDE, which was run and part-authored by the supplement's manufacturer, randomized 380 sarcopenic older adults, 184 to a vitamin D and leucine-enriched whey supplement and 196 to an iso-caloric control, taken twice daily for 13 weeks without a training program. Both of its primary outcomes, grip strength and the physical performance battery, improved in both groups with no significant difference. The active group did better on the chair-stand test and gained 0.17 kg more appendicular muscle mass. Real, and small.
Creatine: the strongest supplement evidence, in healthy older adults
If you add one supplement, the evidence points to creatine monohydrate. A meta-analysis of 22 trials with 721 older adults doing resistance training found creatine produced greater gains in lean tissue mass (mean difference 1.37 kg), chest press strength and leg press strength than training alone. A 2026 three-level meta-analysis of 11 trials in adults aged 60 and over found a small benefit for muscle strength when creatine was added to resistance training (g = 0.31, moderate certainty), while the effects on muscle mass (g = 0.35, low certainty) and physical function (g = 0.47, p = 0.086, very low certainty) were not statistically significant. Its authors add the caveat that matters most on this page: these findings should not be directly extrapolated to frail, sarcopenic or functionally limited older adults, because the trials were run in healthier ones. That applies to this whole section. None of the creatine reviews cited here enrolled people with a diagnosis of sarcopenia. In postmenopausal women, a 2026 review of seven trials (608 women, mean age about 62) found lean mass 0.37 kg higher in the five trials that measured it and leg press one-rep max 7.5 kg higher in the three that measured it, with no change in bone density or kidney markers, with the benefits appearing when at least 5 grams a day was combined with resistance training, and nothing at 3 grams a day or less without training. Worth knowing who wrote it: that review and the safety position stand quoted below both come from the International Society of Sports Nutrition, and its author list includes the society's chief executive and the chair of a creatine advisory board funded by a creatine manufacturer. The numbers hold up on their own, but the independent meta-analysis above is the more conservative guide.
The mirror image of that finding is a 2-year trial in 200 postmenopausal women with osteopenia who took 3 grams a day without a training program: no effect on bone, and no effect on lean mass or muscle function either. Creatine is a training amplifier, not a replacement.
Trials in older adults used 3 to 5 grams a day of plain creatine monohydrate, and the clearest results came from the top of that range: the gains in postmenopausal women showed up at 5 grams a day or more alongside training, while 3 grams a day without training did nothing. One caveat from the meta-analysis of creatine ingestion strategies: when the trials that began with a loading phase were excluded, creatine had no greater effect on chest press or leg press strength than placebo, and taking it only on training days still increased lean tissue mass and strength, so consistency looks to matter more than timing. Whether to start, and at what amount, is a conversation with your doctor. On safety, the 2017 International Society of Sports Nutrition position stand concluded that short and long-term supplementation, up to 30 grams a day for 5 years, is safe and well tolerated in healthy individuals and in a number of patient populations ranging from infants to the elderly. Two things to hold alongside that number: the society discloses that it receives funding on occasion from companies that manufacture, market or sell creatine, and the 30 gram ceiling comes from athlete and clinical trials rather than from frail older adults, so it is six to ten times the 3 to 5 grams used in the aging trials and not a target. Our creatine buyer's guide covers forms and quality.
Vitamin D: correct a deficiency, do not chase a dose
This is where the shelf and the evidence diverge most. Vitamin D does something for muscle when you are deficient. A meta-analysis of 30 trials with 5,615 people found a small positive effect on global muscle strength (SMD 0.17), larger in those with blood levels below 30 nmol/L and in people 65 and older. An earlier review found no effect on grip or lower-limb strength in people whose levels were above 25 nmol/L, while the two trials in genuinely deficient people showed a large effect on hip muscle strength.
Take it without a deficiency and the picture changes. A 2018 review of 81 trials and 53,537 participants found no effect on total fractures, hip fractures, falls or bone density, and no difference between higher and lower doses. A 2021 meta-analysis found vitamin D alone did not reduce falls (relative risk 1.00 across 21 trials and 51,984 people), with two exceptions: people who started below 50 nmol/L did benefit (0.77), and 700 to 1,000 IU paired with 1,000 to 1,200 mg of calcium cut falls by 12 percent (0.88). A 2024 network meta-analysis of 35 trials and 58,937 people found the same shape: 800 to 1,000 IU a day reduced falls (0.85), daily dosing worked while intermittent dosing did not, the benefit was confined to people at or below 50 nmol/L, and doses above 1,000 IU a day produced more falls than 800 to 1,000 IU. The dose-response curve here is a hill, not a ramp, and if you are taking vitamin D with calcium after a fracture, that is a different question from taking vitamin D on its own. In 2018 the US Preventive Services Task Force issued a grade D recommendation against vitamin D supplementation to prevent falls in community-dwelling adults 65 and older, a statement that applied only to people not known to have osteoporosis or vitamin D deficiency. If you have either, it does not apply to you, and it is not a reason to stop what your doctor prescribed. In the same statement, exercise interventions to prevent falls received a grade B.
More is not better, and several trials found the opposite. A single annual 500,000 IU dose increased falls (rate ratio 1.15) and fractures (1.26). In 200 adults aged 70 and over who had already fallen, a monthly 60,000 IU dose produced far more falls than a monthly 24,000 IU dose (66.9 percent versus 47.9 percent over a year), with no gain in lower-extremity function on any dose. In the STURDY trial, doses of 1,000 IU a day or higher did not prevent falls compared with 200 IU a day, and raised the risk of a serious fall (hazard ratio 1.87) and of a fall requiring hospitalization (2.48); a secondary analysis found more fall-related fractures on the higher doses. Long-term supplementation raises the risk of hypercalcemia, and at 3,200 to 4,000 IU a day a meta-analysis found more hypercalcemia, falls and hospitalizations. Three years at 4,000 or 10,000 IU a day lowered radial bone density compared with 400 IU.
HMB: marketed hardest, supported least
HMB, a metabolite of leucine, is the active ingredient in the muscle-support versions of the nutrition drinks sold to older adults, and the marketing runs well ahead of the trials.
In older adults, a meta-analysis of 10 randomized trials with 384 participants concluded that adding HMB to an exercise program had no or fairly low impact on body composition, muscle strength or physical performance in adults aged 50 to 80, compared with exercise alone. A 2025 meta-analysis of 10 trials with 596 older adults comparing resistance training plus HMB against training alone found a borderline effect on grip strength (SMD 0.24, p = 0.05) and a moderate effect on the physical performance battery (SMD 0.54), with no significant effect on appendicular lean mass, gait speed, muscle quality, fat mass or body weight, and half the included trials rated at high risk of bias. A meta-analysis in younger adults found HMB did not improve fat-free mass or strength with resistance training at all.
The stronger numbers come from clinical settings. A review of 15 trials in 2,137 patients across various clinical conditions found small effects on muscle mass (SMD 0.25, confidence interval touching zero) and strength (SMD 0.31), and an umbrella review of 11 meta-analyses, which pooled trials in people aged 23 to 79 rather than patients specifically, reported similarly small effects (muscle mass 0.21, muscle strength index 0.27). If you are recovering from a hospital stay or malnourished, that is a different conversation, and one to have with a dietitian. For a healthy 70 year old with a gym membership, HMB is not where the money goes.
Omega-3 and the rest of the shelf
Omega-3. Genuinely mixed. A 6-month trial that randomized 60 healthy adults aged 60 to 85, of whom 44 finished, found fish oil increased thigh muscle volume by 3.6 percent, grip strength by 2.3 kg and one-rep-max strength by 4 percent compared with corn oil, while the gain in average isokinetic power did not reach significance (p = 0.075). But an 18-week trial adding 3 grams a day to resistance training found benefits in women only, a 12-week trial in older men found omega-3 added nothing to training, and a 24-week trial of leucine-enriched protein with or without omega-3 found no benefit on lean mass, strength, performance or muscle protein synthesis. A 2025 meta-analysis found no effect on muscle protein synthesis rates. Reasonable to take for other reasons; not a muscle strategy.
Leucine, EAAs and BCAAs. Isolated amino acids have not delivered. The pooled analyses of protein or amino acid supplementation in older adults were null. The 24-week trial named in the omega-3 paragraph above gave 10 grams of protein plus 3 grams of leucine twice daily and changed nothing on lean mass, strength, performance or muscle protein synthesis. Whole protein is cheaper, and in this literature the gains come from total protein alongside training rather than from single amino acids. Our guide to whether BCAAs work has the details.
Collagen. Popular with this age group and the wrong tool for this job: collagen contains no tryptophan and little leucine, so it does not stimulate muscle building the way whey or a mixed meal does. See does collagen count as protein.
Urolithin A, NMN, ursolic acid and testosterone boosters. We looked for randomized trials measuring muscle mass, strength or physical function in older adults for these, and did not find evidence that would justify a recommendation here. That is not the same as evidence that they are useless. It means we did not find trial evidence strong enough to recommend any of them for age-related muscle loss. Testosterone is a prescription drug with its own risk profile, not a supplement question. Our posts on NMN and NAD and testosterone boosters cover what is actually known.
When the scale lies: obesity and GLP-1 medications
You can carry plenty of weight and still be sarcopenic. European nutrition and obesity societies published a consensus definition of sarcopenic obesity in 2022, with a two-step approach: screen on body mass index or waist circumference plus risk markers, then assess muscle function before body composition. A meta-analysis of 50 studies put the global prevalence at around 11 percent of older adults, rising to 23 percent in studies focused on people 75 and over, and a pooled analysis of 23 cohorts found sarcopenic obesity was associated with a 21 percent higher risk of death.
Which brings up the medications. A 2026 systematic review of 35 weight loss trials, incretin drugs and nonpharmacologic approaches together, found that in the incretin groups the median share of weight loss attributable to muscle-based measures was 28.3 percent, with about two thirds of trials above the roughly 25 percent of lost weight that is normally lean tissue, and noted that no study in that review reported an objective measure of physical function. A network meta-analysis of 22 trials put lean mass loss at 0.86 kg, roughly a quarter of total weight lost, while the relative change in lean mass from baseline was not statistically significant. The answer is not to stop the medication; it is resistance training and protein while you lose weight, which is what we cover in supplements to take with GLP-1 medications and creatine on a GLP-1.
A starting plan for the next month
| What | What the best evidence shows | Amount studied | Verdict |
|---|---|---|---|
| Resistance training | Not a supplement, but the only intervention with large, repeated effects on strength and function, including in people in their eighties and nineties. | 2 to 3 sessions a week | Do this first |
| Protein (food or whey) | Adds to training. Without training, meta-analyses in non-frail older adults are null. The gains show up alongside resistance exercise, and in frail or sarcopenic groups. | 1.0 to 1.2 g/kg a day, more when ill | Worth it, with training |
| Creatine monohydrate | The best supplement signal here: added to resistance training it increased lean tissue mass and strength across 22 trials, with a smaller strength effect in a 2026 analysis and no clear effect on muscle mass or physical function. | 3 to 5 g a day | Worth trying, with training |
| Vitamin D | Corrects a deficiency. In people who are not deficient, it does not improve strength, and high doses increased falls and fractures in several trials. | Only to correct a low blood level | Test, do not guess |
| HMB | Marketed hardest, supported least. Added to resistance training in older adults the effects are small, inconsistent and mostly on function scores rather than muscle mass. | Doses varied across trials | Not a first choice |
| Omega-3 (fish oil) | Mixed. One 6-month trial improved muscle volume and strength; trials adding it to resistance training found benefit in women only, or none at all. | About 3 g a day in trials | Optional |
| Leucine, EAAs, BCAAs | Amino acid and leucine-enriched supplements did not improve lean mass or strength versus control in older adults. | Not established | Skip |
| Collagen | Not a muscle protein: no tryptophan and little leucine. | Not applicable | Skip for muscle |
Ordered by the strength of the evidence, not by how heavily each is marketed.
- Week 1: measure, safely. Use a sturdy armchair backed against a wall, have someone else in the room, and stop right away if you feel dizzy, short of breath or unsteady. If you cannot stand up without pushing off with your arms, that is your result and it is not worth forcing. If you use a cane or walker for balance, do the 6 meter walk with it and write down that you used it. Then note whether either number crosses the thresholds above; they are your baseline.
- Week 1: book the appointment if anything in the rule-out section applies, and ask for a vitamin D level while you are there.
- Weeks 1 to 4: train twice a week. Progressive resistance work for the legs, hips and upper body. This is the part that produces the effects described above.
- Every day: hit the protein target from the table, spread across meals rather than piled into dinner.
- Then, and only then, add creatine at 3 to 5 grams a day if your doctor has no objection.
- Re-measure at the end of the month. Chair-stand time is the number most likely to move first.
Frequently asked questions
Can sarcopenia be reversed?
Muscle and strength can be rebuilt at almost any age, which is the most encouraging finding in this field. In a trial in nursing home residents averaging 87 years old, 10 weeks of high-intensity resistance training raised muscle strength by 113 percent, while the nutritional supplement alone changed nothing. A meta-analysis of 22 trials in adults aged 75 and over found resistance training still increased strength and muscle size, and the strength gain held in the subgroup aged 80 and over. Whether you can undo a formal diagnosis depends on how far it has gone and what else is going on, so treat it as a condition to manage with your doctor rather than a switch to flip.
How do I know if I have sarcopenia?
Three checks cover most of it. First, stand up from a chair five times without using your arms and time it: 12 seconds or longer is a warning sign. Second, walk 6 meters at your usual pace; slower than about 1 meter per second is slow enough to matter. Third, grip strength measured on a hand dynamometer. The Asian Working Group's cut-points are below 28 kg for men and 18 kg for women, while a pooled analysis of US cohorts used a higher bar, below 35.5 kg for men and 20 kg for women, so in the United States a grip in the low 30s can still count as weak. None of these is a diagnosis. Do them with someone present and a sturdy chair against a wall, and stop if you feel unsteady. If standing without using your arms is not safe, that is itself an answer, and it belongs in front of a clinician rather than being repeated at home. The SARC-F questionnaire is often suggested for screening, but it misses between 45 and 71 percent of cases, so bring the results to a clinician rather than relying on a score.
What vitamin stops age-related muscle loss?
There is not one. Vitamin D is the usual answer and it is only half right: correcting a deficiency helps muscle strength, with the clearest effects in people whose blood level is very low, while supplementing people who are already replete does not improve strength. In the largest pooled analysis by number of trials, covering 81 trials and more than 53,000 people, vitamin D did not reduce total fractures, hip fractures or falls. Two analyses with more participants found a benefit only where you would expect one: in people who started deficient, and at 800 to 1,000 IU a day taken daily. Several high-dose trials increased falls. The interventions with real effects on muscle are resistance training, enough protein, and creatine alongside training.
How much protein does a 70 year old need per day?
Expert groups recommend at least 1.0 to 1.2 grams per kilogram of body weight a day for healthy older adults, more than the 0.8 g/kg RDA, and 1.2 to 1.5 g/kg for those who are ill or recovering. For a 150 pound adult that is roughly 68 to 82 grams a day, or about 82 to 102 grams when ill. Spreading it out probably matters too: in a retrospective analysis of older men, the muscle-building response plateaued after about 0.4 grams per kilogram of body weight in a single meal, against 0.24 in younger men, though that difference fell just short of statistical significance (p = 0.055). About 30 grams per meal for a 75 kilogram adult is a sensible working target rather than a proven threshold. People with advanced kidney disease are the exception and should get their target from their doctor.
Is creatine safe for older adults, and what dose?
Creatine monohydrate has the strongest supplement evidence here, though the trials were run in generally healthy older adults rather than in people with a sarcopenia diagnosis. Trials used 3 to 5 grams a day, and the clearest results came from 5 grams a day alongside resistance training. The International Society of Sports Nutrition, whose authors disclose that the society receives funding on occasion from companies that manufacture, market or sell creatine, concluded that supplementation up to 30 grams a day for 5 years is safe and well tolerated in healthy individuals and in a number of patient groups ranging from infants to the elderly. That ceiling comes from athlete and clinical trials rather than from frail older adults, and it is six to ten times the 3 to 5 grams used in the aging trials. One thing to tell your doctor: creatine can raise blood creatinine, the marker used to estimate kidney function, in people whose kidneys are working normally, so mention it before a blood test. Anyone with kidney disease should ask first.
Does HMB work for age-related muscle loss?
Weakly, at best. HMB is a leucine metabolite sold heavily for muscle preservation. In older adults, adding it to an exercise program produced no or fairly low benefit across 10 trials in people aged 50 to 80, and a 2025 meta-analysis of 10 trials found a borderline effect on grip strength and a moderate one on a physical performance score, with no effect on lean mass, gait speed or fat mass, and half the trials at high risk of bias. The stronger results come from hospitalized or malnourished patients, which is a different situation from a healthy 70 year old.
Can a 70 or 80 year old still build muscle?
Yes. Some of the largest percentage gains on record come from the oldest and frailest people, partly because they start from such a low baseline. A meta-analysis in adults aged 75 and over found resistance training increased strength and muscle size, with the strength gain holding in the subgroup aged 80 and over, and the classic nursing home trial in people averaging 87 more than doubled leg strength in 10 weeks. Gains come more slowly than at 30, and the effect of extra protein shrinks with age, but the direction does not change.
Does Ozempic cause muscle loss, and what should I do about it?
Some of the weight lost on GLP-1 medications is lean mass, as it is with any large weight loss. A 2026 systematic review of 35 weight loss trials found that in the incretin groups the median share of weight loss coming from muscle-based measures was 28 percent, and no study in it reported an objective measure of physical function. A network meta-analysis of 22 trials put lean mass loss at about a quarter of total weight lost, though the relative change in lean mass from baseline was not statistically significant. The response is the same as for sarcopenia generally: resistance training, enough protein, and a conversation with your prescriber, not stopping a medication on your own.
The bottom line
Sarcopenia is a strength problem before it is a mass problem, which is why the supplement aisle is the wrong place to start. The intervention with large, repeatable effects is resistance training, including in people in their eighties and nineties. Protein at 1.0 to 1.2 grams per kilogram supports it, and on its own does very little in people who are not frail. Creatine at 3 to 5 grams a day is the one supplement with a consistent signal, and it works alongside training rather than instead of it.
Vitamin D is worth testing and correcting, not stacking. HMB, isolated amino acids and collagen do not earn their place for this purpose. And weakness that arrives quickly, or with weight loss you did not intend, belongs in a doctor's office before it belongs in a shopping cart.