Creatine + HMB for Muscle, Strength & Healthy Aging:

Creatine + HMB for Muscle, Strength & Healthy Aging: What the Science Says

By Jackson Sobbing, DO | Agape Life Sciences

Maintaining muscle is about much more than appearance.

Skeletal muscle contributes to strength, mobility, metabolic health, glucose regulation, independence, and our ability to remain active as we age. Unfortunately, aging is also associated with a gradual loss of muscle mass and strength, along with anabolic resistance—a reduced muscle-building response to protein and exercise.

Resistance training and adequate dietary protein remain the foundation for preserving muscle.

But certain nutrients may provide additional support.

Two of the most extensively studied are creatine monohydrate and HMB (β-hydroxy-β-methylbutyrate).

These compounds work through different but complementary physiological pathways. Creatine primarily supports cellular energy availability and the ability to perform high-intensity muscular work. HMB appears to influence the balance between muscle protein synthesis and muscle protein breakdown.

That combination is one reason we chose to include 5 grams of creatine monohydrate and 3 grams of HMB in each daily serving of Agape Renewal Foundation⁠.

Let’s look at what the research actually shows—and where the evidence remains uncertain.

Creatine: More Than a Sports Supplement

Creatine is sometimes thought of simply as a supplement for athletes.

Its physiology is much broader.

Inside muscle cells, creatine is stored partly as phosphocreatine. During periods of high energy demand, phosphocreatine helps rapidly regenerate adenosine triphosphate, or ATP—the molecule cells use as their immediate energy currency.

That matters during resistance exercise because maintaining ATP availability can allow someone to perform slightly more work: another repetition, a little more weight, or better maintenance of power across a training session.

Those seemingly small improvements can accumulate over weeks and months.

Creatine may also influence cellular signaling associated with muscle adaptation, although its ability to support greater training quality is likely an important part of its long-term effect.

Creatine and Lean Muscle Mass

This is where the evidence for creatine is strongest.

A 2024 systematic review and meta-analysis examining adults younger than 50 found that adding creatine to resistance training resulted in approximately 1.14 kg—or about 2.5 pounds—more lean body mass than resistance training alone.

The creatine groups also experienced small reductions in body-fat percentage and fat mass.

Research in older adults is similarly compelling.

A meta-analysis involving 721 older adults found that creatine combined with resistance training increased lean tissue mass by approximately 1.37 kg more than resistance training alone, while also producing greater improvements in upper- and lower-body strength.

That is an important distinction:

Creatine works best as an amplifier of good training—not as a replacement for it.

Supplementation can support the physiology, but resistance exercise provides the signal telling muscle that it needs to adapt.

Creatine and Strength

Creatine doesn’t simply affect the number on a body-composition scan.

Research consistently demonstrates improvements in muscular strength when creatine is combined with resistance training.

In older adults, meta-analyses have shown additional improvements in both chest-press and leg-press strength compared with resistance training alone.

This becomes increasingly relevant with aging because strength may matter even more than muscle size when we think about maintaining mobility, physical function, independence, and healthspan.

The goal is not simply to have more muscle.

The goal is to maintain muscle that remains capable of doing meaningful work.

How Much Creatine?

Creatine has been studied using several dosing strategies.

A traditional approach involves a loading phase of approximately:

20 grams per day, typically divided into four doses, for 5–7 days

followed by:

3–5 grams per day for maintenance.

But loading is not necessary.

Taking 3–5 grams of creatine monohydrate daily will also gradually increase muscle creatine stores. It simply takes longer to reach saturation.

For most people interested in long-term health rather than rapidly maximizing muscle creatine before an athletic event, consistency is more important than loading.

The Agape Renewal dose

Each serving of Agape Renewal Foundation provides 5 grams of creatine monohydrate—a dose that sits squarely within the range commonly studied for long-term supplementation.

You can review the research behind the formulation in the Agape Life Sciences Science & Research Library⁠.

Creatine and the Brain

Muscle is not the only tissue with significant energy demands.

The brain requires enormous amounts of ATP to maintain neuronal signaling, ion gradients, neurotransmission, and other essential cellular processes.

The brain also contains its own creatine-phosphocreatine energy system.

That has led researchers to investigate whether creatine supplementation could influence cognition.

The evidence is interesting—but it is not yet as strong or consistent as the muscle research.

A meta-analysis of randomized controlled trials found a modest overall improvement in memory with creatine supplementation.

The most striking finding came from older adults.

Among adults approximately 66–76 years old, the improvement in memory was substantially greater than that observed in younger participants.

Other research suggests possible cognitive benefits during conditions of increased metabolic stress, including sleep deprivation, although individual studies remain inconsistent.

So when discussing creatine and cognition, the appropriate interpretation is:

promising, particularly in aging—but not yet as established as its effects on muscle and strength.

What About Creatine and Longevity?

This is where we need to be careful about separating biological plausibility from proven outcomes.

There are good reasons to be interested in creatine as part of a healthy-aging strategy.

Maintaining muscle, strength, mobility, and possibly cognitive function are all relevant to healthspan.

There are also emerging mechanistic data involving mitochondrial function, cellular stress, inflammation, and cellular senescence.

But we do not currently have randomized human trials demonstrating that creatine supplementation extends lifespan.

A 2025 analysis of U.S. NHANES data found that adults consuming at least 1 gram of dietary creatine per day had a lower observed risk of all-cause mortality than those consuming less.

However, that relationship weakened after adjustment for demographic and lifestyle factors.

That means the study establishes an association, not causation.

Creatine should therefore not be marketed as a proven lifespan-extending supplement.

Its stronger argument for healthy aging is much simpler:

Creatine can help support the muscle, strength, exercise capacity, and cellular energy systems that help us remain functional as we grow older.

HMB: Supporting the Other Side of Muscle Metabolism

If creatine primarily helps support cellular energy and training capacity, HMB approaches muscle physiology from another direction.

HMB stands for β-hydroxy-β-methylbutyrate.

It is a naturally occurring metabolite of the essential amino acid leucine.

Only a relatively small portion of dietary leucine is naturally converted into HMB, which is one reason HMB has been studied as a separate nutritional intervention.

Its effects appear to involve both sides of muscle protein turnover.

HMB has been associated with stimulation of signaling involved in muscle protein synthesis, including mTOR-related pathways, while also reducing activity of pathways involved in muscle protein breakdown, including the ubiquitin-proteasome system.

In practical terms, HMB may help create a more favorable environment for maintaining muscle.

HMB and Muscle Mass

The magnitude of the HMB effect is considerably smaller than the exaggerated claims sometimes seen in supplement marketing.

But there is evidence of benefit.

A 2025 umbrella review evaluated multiple previous meta-analyses of HMB supplementation.

Across the included research, HMB produced statistically significant improvements in:

• muscle mass
• fat-free mass
• muscular strength

The effect sizes were modest.

That is exactly how HMB should be understood.

HMB is not a replacement for resistance training, adequate protein, or appropriate nutrition.

Instead, it may provide additional nutritional support—particularly when preserving muscle becomes more difficult.

Where HMB May Be Most Useful

HMB becomes especially interesting when the problem is not simply building new muscle, but preventing muscle loss.

Research has examined HMB in older adults and during periods of:

• aging
• sarcopenia
• illness
• bed rest
• reduced activity
• recovery from injury
• physiologic stress

One controlled study of older adults placed on bed rest found that HMB helped attenuate the loss of lean body mass associated with inactivity.

That may be an important distinction between HMB and many traditional performance supplements.

Its greatest value may not be helping an already well-trained athlete become dramatically more muscular.

Its role may be helping protect muscle when circumstances make maintaining it more difficult.

HMB and Strength

The 2025 umbrella review also found a statistically significant improvement in muscular strength.

Interestingly, subgroup analysis suggested that the strength effect was greater in participants over age 60 and in studies lasting longer than eight weeks.

Other analyses of people with sarcopenia have found improvements in measures such as handgrip strength.

However, not every study demonstrates a meaningful benefit.

In some well-controlled studies of older adults, exercise itself clearly produced the dominant effect, while adding HMB provided little additional benefit.

That is not a failure of HMB.

It is an important reminder of the hierarchy:

Resistance exercise is the stimulus.

Protein provides essential building material.

Creatine and HMB may provide additional support.

Supplements belong on top of the foundation—not underneath it.

How Much HMB?

The most commonly researched HMB dose is:

3 grams per day

or approximately:

38 mg/kg/day.

Both calcium HMB and free-acid HMB have been studied.

Many trials divide the daily amount into multiple doses, although the total daily intake appears more important for long-term nutritional supplementation.

The Agape Renewal dose

Each serving of Agape Renewal Foundation contains 3 grams of HMB, along with 5 grams of creatine monohydrate.

Both are provided at amounts consistent with doses commonly evaluated in human research.

Learn more about the evidence, mechanisms, and studies used when developing the formula in our Science & Research Library⁠.

Why Combine Creatine and HMB?

Creatine and HMB should not be thought of as interchangeable.

They address different parts of muscle physiology.

Creatine supports the phosphocreatine energy system, ATP regeneration, exercise performance, strength, and the ability to adapt to resistance training.

HMB appears to support muscle protein turnover by promoting anabolic signaling while helping limit excessive muscle protein breakdown.

One helps support the energy required to perform and adapt.

The other may help support the physiology needed to preserve and rebuild.

This becomes particularly relevant during midlife and aging, when maintaining muscle increasingly requires intentional effort.

That is why we included both ingredients in Agape Renewal Foundation⁠ rather than relying on a proprietary blend or token doses added primarily for marketing.

Each daily serving contains:

Creatine monohydrate — 5 g

HMB — 3 g

alongside additional nutrients selected to support recovery, hydration, cellular function, and healthy aging.

The Bigger Picture: Supplements Don’t Replace the Foundation

No supplement eliminates the need to train.

And no powder can compensate for consistently inadequate protein, poor sleep, physical inactivity, or untreated medical problems.

The strongest approach to preserving muscle through midlife and beyond remains remarkably straightforward:

Resistance training.

Adequate protein.

Regular physical activity.

Appropriate recovery.

Good metabolic health.

And consistency.

Where supplements become valuable is in making that foundation a little stronger.

Creatine has some of the strongest evidence available among nutritional supplements for supporting lean mass and strength when combined with resistance training.

HMB appears to have a more modest but potentially useful role, particularly in preserving muscle during aging, reduced activity, or other situations associated with increased muscle loss.

That is exactly how we approach formulation at Agape Life Sciences.

We don’t believe every ingredient needs an exaggerated claim.

We believe every ingredient needs a reason to be there—and an amount that makes physiological sense.

Because healthy aging isn’t simply about living longer.

It’s about preserving the strength, function, and resilience to live those years well.

Creatine and HMB are only part of the picture. Strength, nutrition, movement, sleep, metabolic health, and other factors all work together as we age. Learn more about how muscle support fits into a complete midlife healthspan strategy in our Physician’s Guide.

Learn More

Explore the formulation:
Agape Renewal Foundation — Creatine + HMB for Muscle, Recovery & Healthy Aging⁠

Read the research:
Agape Life Sciences Science & Research Library⁠

Selected Research

1. Chilibeck PD, Kaviani M, Candow DG, Zello GA. Effect of creatine supplementation during resistance training on lean tissue mass and muscular strength in older adults: a meta-analysis. Open Access Journal of Sports Medicine. 2017;8:213–226.
2. Forbes SC, Candow DG, Ostojic SM, Roberts MD, Chilibeck PD. Meta-analysis examining the importance of creatine ingestion strategies on lean tissue mass and strength in older adults. Nutrients. 2021;13(6):1912.
3. Burke R, et al. The effect of creatine supplementation on resistance training-based changes to body composition: a systematic review and meta-analysis. Journal of Strength and Conditioning Research. 2024;38(10):1813–1821.
4. Prokopidis K, et al. Effects of creatine supplementation on memory in healthy individuals: a systematic review and meta-analysis of randomized controlled trials. Nutrition Reviews. 2023;81(4):416–427.
5. Ostojic SM. Dietary creatine intake and all-cause mortality among U.S. adults: a linked mortality analysis from the NHANES study. Applied Physiology, Nutrition, and Metabolism. 2025;50:1–6.
6. Bideshki MV, et al. Ergogenic benefits of β-hydroxy-β-methylbutyrate supplementation on body composition and muscle strength: an umbrella review of meta-analyses. Journal of Cachexia, Sarcopenia and Muscle. 2025;16(1):e13671.
7. Wilson JM, Fitschen PJ, Campbell B, et al. International Society of Sports Nutrition position stand: beta-hydroxy-beta-methylbutyrate supplementation and exercise. Journal of the International Society of Sports Nutrition. 2013;10:6.
8. Deutz NEP, Pereira SL, Hays NP, et al. Effect of beta-hydroxy-beta-methylbutyrate on lean body mass during 10 days of bed rest in older adults. Clinical Nutrition. 2013;32(5):704–712.
9. Wilkinson DJ, Hossain T, Hill DS, et al. Effects of leucine and its metabolite β-hydroxy-β-methylbutyrate on human skeletal muscle protein metabolism. Journal of Physiology. 2013;591(11):2911–2923.

This article is provided for educational purposes and is not intended to diagnose, treat, cure, or prevent disease. Dietary supplements should complement—not replace—a balanced diet, resistance exercise, appropriate medical care, and other healthy lifestyle practices. Individuals who are pregnant or breastfeeding, have kidney disease, cardiovascular disease, electrolyte disorders or other medical conditions, or who take prescription medications should discuss supplementation with an appropriate healthcare professional.

These statements have not been evaluated by the U.S. Food and Drug Administration.