If you're in your 40s, 50s or 60s and strength training, you've probably heard a training partner mention creatine. It's one of the most researched supplements in sports nutrition, but most of the marketing around it is aimed at 20-something bodybuilders, not at the population who arguably stands to benefit the most from it: adults navigating the natural muscle, bone and cognitive changes that come with midlife.

At The Richmond Gym, what we like about creatine is that it isn't hype. It's one of the few supplements with genuine, peer-reviewed evidence behind it. Here's what the research says, and what it doesn't.

Why creatine matters more after 40

From around age 30, we lose roughly 3 to 8 percent of muscle mass per decade, a process called sarcopenia, and this accelerates from the mid-40s onward. Muscle isn't just about aesthetics: it's your metabolic reserve, your fall-prevention insurance, and a major driver of how independently you'll move in your 70s and 80s. Resistance training is the single best tool for slowing this down. Creatine's main claim to fame is that it makes that training more effective.

Creatine monohydrate is a compound your body already makes and stores mostly in skeletal muscle, where it helps regenerate ATP (adenosine triphosphate), the fuel your muscles use for short, powerful efforts like a heavy set of squats. Supplementing simply tops up those stores beyond what a typical diet provides.

Muscle mass and strength: the best-established benefit

This is where the evidence is strongest. A 2025 systematic review and meta-analysis in the European Review of Aging and Physical Activity pooled 8 randomized controlled trials (482 participants, average age 50+) and found that creatine combined with resistance training significantly improved lower-limb strength and lean tissue mass compared with resistance training alone, with the biggest gains showing up within the first 32 weeks of consistent training (Liu et al., 2025).

This lines up with the position of the International Society of Sports Nutrition, whose formal position stand describes creatine monohydrate as "the most effective ergogenic nutritional supplement currently available" for increasing lean mass and high-intensity exercise capacity, with benefits demonstrated across age groups including older adults (Kreider et al., 2017).

The takeaway: creatine isn't a replacement for resistance training: it's an amplifier. If you're already doing 2 to 3 strength sessions a week at TRG, it's the training that does the heavy lifting; creatine just helps you get more out of each session and recover a little faster for the next one.

Brain health and memory

This is the newer, more surprising area of research, and it's particularly relevant given that brain creatine stores can be depleted by poor sleep, stress and ageing itself.

A 2024 meta-analysis in Frontiers in Nutrition, covering 16 randomized controlled trials, found that creatine supplementation produced significant improvements in memory and processing speed, with the effect on memory rated as moderate-to-good quality evidence (Xu et al., 2024). A separate systematic review focused specifically on older adults (mean age 67 to 76) found that five of six studies reported positive associations between creatine and cognition, particularly in memory and attention (Marshall et al., 2026).

The honest caveat: this research is still maturing, and not every study agrees: a couple found no measurable benefit, and effects seem strongest in people under demanding cognitive or physical stress (sleep deprivation, illness, ageing brains) rather than in already well-rested, healthy adults. It's a promising secondary benefit, not the headline reason to supplement.

Bone health: encouraging, but not a magic bullet

Here's where we want to represent the evidence honestly: not overselling it, and not cherry-picking the results.

A well-designed 2-year randomized controlled trial in postmenopausal women found that creatine, combined with resistance and walking exercise, did not increase bone mineral density itself, but it did significantly improve bone geometry at the hip (specifically, resistance to bending and compressive loads) and increased lean tissue mass and walking speed compared with placebo (Chilibeck et al., 2023). Another 2-year RCT in older women with osteopenia found no additional benefit to bone density or fracture risk from creatine beyond exercise alone (Sales et al., 2020).

The honest summary: creatine appears to support bone strength characteristics and the muscle that protects bones, even where it doesn't shift bone density scans much. If bone health is a primary concern, creatine is a reasonable adjunct to (never a substitute for) resistance training, adequate calcium and vitamin D, and medical management of osteoporosis risk.

A note for women in perimenopause and menopause

A 2025 review in the Journal of the International Society of Sports Nutrition consolidated the evidence on creatine across women's life stages and found that postmenopausal women combining creatine with resistance training reliably gain strength and lean mass, and that creatine shows promise supporting mood during the perimenopausal window, when depression risk is highest (Smith-Ryan et al., 2025). The same review is candid that direct research in perimenopausal women specifically is still limited: an evidence gap worth knowing about rather than glossing over.

Is it safe? What the safety research says

Creatine monohydrate is arguably the most rigorously safety-tested supplement in sports nutrition, including in long-term use. A 2023 narrative review in Nutrients addressed the long-standing "creatine damages kidneys" myth directly, concluding that controlled trials show no deterioration in actual kidney function (measured properly, not just via serum creatinine, which rises naturally with creatine use but doesn't reflect kidney damage) in healthy individuals (Longobardi et al., 2023). The ISSN position stand similarly concludes that creatine is safe and well-tolerated across populations "ranging from infants to the elderly," even at doses well above what's typically recommended (Kreider et al., 2017).

The one clear exception: if you have pre-existing kidney disease, or you're on medications that affect kidney function, talk to your doctor before starting. This is where individualised advice matters more than a blog post.

Practical guidance

• Form: Creatine monohydrate is the form used in almost all of the research above. It's inexpensive, well-studied, and doesn't need anything fancier.

• Dose: A simple 3 to 5 grams per day, taken consistently, is enough to saturate muscle stores over 3 to 4 weeks. A loading phase (20 grams per day for 5 to 7 days) speeds this up but isn't necessary.

• Timing: Total daily intake matters more than timing, though taking it around your training session is a sensible habit to build consistency.

• Pairing: The evidence is consistently clearest when creatine is paired with resistance training. It's a supporting player, not a standalone fix.

• Who should check with their doctor first: anyone with kidney disease, anyone on nephrotoxic medications, and anyone pregnant or breastfeeding (data here is still limited).

Ready to put this into practice?

If you want the coaching, the accountability and the nutrition support to actually apply what you've just read, our 21 Day Strength Reset is the fastest way to start. It includes a complimentary nutrition consult with our team and a gift voucher to Nutrition Warehouse, so getting your training and your supplementation right from day one costs you nothing extra to try.

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The bottom line

For adults in the 40 to 60 bracket, creatine is one of the few supplements where the enthusiasm is actually backed by the research: solid evidence for muscle mass and strength when paired with resistance training, encouraging (if still developing) evidence for memory and bone strength characteristics, and a safety record that's held up under decades of scrutiny. It won't replace consistent training, good protein intake and sleep, but as an evidence-based addition to a strength program like the ones we run at TRG, it's a reasonable, well-supported choice for most healthy adults.

This article is for general educational purposes and isn't a substitute for individual medical or dietetic advice. If you have a pre-existing health condition or take regular medication, check with your doctor before starting any new supplement.

References

1. Kreider, R.B., Kalman, D.S., Antonio, J., Ziegenfuss, T.N., Wildman, R., Collins, R., Candow, D.G., Kleiner, S.M., Almada, A.L., and Lopez, H.L. (2017). International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. Journal of the International Society of Sports Nutrition, 14(1), 18.

2. Liu, S., Huang, N., Wu, W., OuYang, X., Luo, Y., Zhong, Y., Wang, M., and Xiao, L. (2025). The impact of creatine supplementation associated with resistance training on muscular strength and lean tissue mass in the aged: a systematic review and meta-analysis. European Review of Aging and Physical Activity, 22, 26.

3. Xu, C., Bi, S., Zhang, W., and Luo, L. (2024). The effects of creatine supplementation on cognitive function in adults: a systematic review and meta-analysis. Frontiers in Nutrition, 11, 1424972.

4. Marshall, S., Kitzan, A., Wright, J., Bocicariu, L., and Nagamatsu, L.S. (2026). Creatine and cognition in aging: A systematic review of evidence in older adults. Nutrition Reviews, 84(2), 333 to 344.

5. Chilibeck, P.D., Candow, D.G., Gordon, J.J., et al. (2023). A 2-yr Randomized Controlled Trial on Creatine Supplementation during Exercise for Postmenopausal Bone Health. Medicine and Science in Sports and Exercise, 55(10), 1750 to 1760.

6. Sales, L.P., Pinto, A.J., Rodrigues, S.F., Alvarenga, J.C., Gonçalves, N., Sampaio-Barros, M.M., Benatti, F.B., Gualano, B., and Rodrigues Pereira, R.M. (2020). Creatine Supplementation (3 g/d) and Bone Health in Older Women: A 2-Year, Randomized, Placebo-Controlled Trial. The Journals of Gerontology: Series A, 75(5), 931 to 938.

7. Smith-Ryan, A.E., DelBiondo, G.M., Brown, A.F., Kleiner, S.M., Tran, N.T., and Ellery, S.J. (2025). Creatine in women's health: bridging the gap from menstruation through pregnancy to menopause. Journal of the International Society of Sports Nutrition, 22(1), 2502094.

8. Longobardi, I., Gualano, B., Seguro, A.C., and Roschel, H. (2023). Is it time for a requiem for creatine supplementation-induced kidney failure? A narrative review. Nutrients, 15(6), 1466.