Short answer: Maybe a little, but exercise is what makes creatine work. A small 2026 study found non-exercisers aged 45 to 65 gained about 1 kg of lean tissue on 10 g a day. A 2-year trial in 200 older women found no gain without training.
Why is this creatine study everywhere right now?
On 18 September 2026, Texas A&M University announced a new creatine study with the headline "Study finds creatine's benefits extend beyond the gym" [1].
On 26 September, ScienceAlert ran it as "Popular Supplement Increases Strength Even Without Exercise" [2]. Other sites followed within days.
If you are in your 40s, that headline is tempting. You know muscle gets harder to keep with age. And a scoop of powder sounds easier than a gym membership.
So we read what the study actually did, who funded it, and what older research says.
What did the Texas A&M study actually do?
The study was published in the Journal of the International Society of Sports Nutrition [3]. It followed 64 healthy adults aged 45 to 65 for 12 weeks [1].
Each person was randomly given either 10 g of creatine monohydrate a day or a placebo, a dummy powder. Neither the volunteers nor the researchers knew who got what [2].
Separately, people chose for themselves whether to join an exercise and diet programme [1]. In the end, 38 joined and 26 did not [2].
The exercise group did resistance and aerobic training three times a week. They also ate a little less than they burned, to lose weight [1].
What did it find in people who did not exercise?
Among the non-exercisers, those on creatine gained about 2.4 pounds of lean tissue over 12 weeks [1]. That is roughly 1.1 kg. Lean tissue means everything that is not fat, mostly muscle and water.
They also got stronger on the leg press and bench press [1]. So the headline is not made up.
In the exercise group, creatine added more strength and a bigger drop in body fat percentage than exercise and diet alone [1]. There were also signs of better memory scores, but the researchers call these results exploratory [2].
What are the limits of this study?
It was small. Only 26 people skipped the exercise programme, and they were split between creatine and placebo [2]. A handful of people can swing the average.
It was short. Twelve weeks is not long. Creatine pulls water into muscle cells. A 2021 review notes that lean mass gains in short creatine studies can be explained by extra body water [4].
The dose was high. The study used 10 g a day. Most research uses 3 to 5 g [4]. ScienceAlert notes that 10 g equals the creatine in about 2 kg of meat or fish a day [2].
People picked their own group. Those who chose to exercise may differ in other ways from those who did not.
Funding and ties. The WoodNext Foundation funded the study [1]. The senior author, Richard Kreider, chairs the science advisory board of Alzchem, the creatine maker that supplied the supplements [2]. Alzchem also funded one set of lab tests. The paper says the company was not involved in collecting or analysing the data [2]. That does not make the results wrong. It is simply worth knowing.
What did the longer trial in older women find?
A 2-year trial from Brazil is the big counterweight. It was published in 2020 in the Journals of Gerontology [5].
It followed 200 postmenopausal women with osteopenia, which means bones thinner than normal but not yet osteoporosis. They took 3 g of creatine a day or a placebo for 2 years [5].
Creatine did not improve bone health. It did not change lean mass or muscle function either [5]. The authors wrote that this "refutes" the idea that creatine alone builds bone or muscle in the long run.
Two fair points. That trial used 3 g, not 10 g. And it did not compare training with no training, as the new study did [2].
So does creatine work without exercise?
The honest answer is: the effect, if any, is small and not settled. The 2021 review in the same journal says creatine alone is "unlikely" to give substantial gains in muscle strength and function [4].
The picture changes when you add training. The same review says many studies in postmenopausal women found that creatine plus resistance training improved muscle mass and strength [4].
In one year-long study, creatine with supervised training also slowed bone loss at the hip in postmenopausal women [4]. The authors recommend pairing creatine with resistance training in older adults [4].
Do you need a gym for resistance training?
No. Resistance training just means making your muscles work against a load. The load can be your own body weight.
Sitting down and standing up from a chair, wall push-ups, and lifting water bottles all count. So does carrying a heavy sabzi bag up the stairs, done on purpose.
Start small. A few short sessions a week at home is a real beginning. If you have joint pain or a heart condition, ask your doctor what is safe for you.
What this means if you...
...are in your 40s and do not exercise at all
Creatine is not a substitute for moving. The 2-year trial in 200 women found no muscle or bone gain from creatine alone [5]. Start with simple strength moves at home first.
...already walk or do yoga
Add two or three strength moves to your routine. If you want creatine, 3 to 5 g a day is the dose most research uses [4]. Pairing it with training is where the evidence is strongest [4].
...are perimenopausal and tired all the time
Creatine is not a fix for fatigue. Ask your doctor to check iron, thyroid and vitamin B12 first. Our post on new ferritin cut-offs explains why iron is worth testing.
Where AIM stands
We think creatine is one of the few supplements with solid research behind it, especially for women who train. FORGE is our daily sachet with 5 g of micronised creatine monohydrate, iron bisglycinate and vitamin C. It is launching soon, and you can find where it fits your routine. Two honest notes. FORGE has 5 g, half the 10 g used in the Texas A&M study, so we will not claim it matches that trial. And we will not tell you creatine builds muscle without exercise. The best evidence says it works with training, not instead of it.
Frequently asked questions
Does creatine work without exercise?
The evidence is mixed. In a small 2026 study, non-exercisers aged 45 to 65 took 10 g a day. They gained about 1 kg of lean tissue in 12 weeks. But a 2-year trial in 200 postmenopausal women on 3 g a day found no gain in muscle or bone. Most research says creatine works best with resistance training.
Is creatine good for women over 40?
It can be, especially if you also do strength training. A 2021 research review found that many studies in postmenopausal women saw better muscle mass and strength when creatine was added to resistance training. Without training, the benefit is small or absent. Check with your doctor first if you have kidney disease or take regular medication.
How much creatine should a woman over 40 take?
Most research uses 3 to 5 g of creatine monohydrate a day, and a 2021 review says this works without a loading phase. The widely shared 2026 Texas A&M study used 10 g a day, which is higher than usual. Follow the label on your product and talk to your doctor if you have a health condition.
Is creatine safe for older women?
For healthy adults, creatine has a good safety record. Texas A&M reports that a 2025 analysis of 685 clinical trials found no significant difference in reported side effects between creatine and placebo. People with kidney disease, and anyone pregnant or breastfeeding, should speak to a doctor first, because research in these groups is limited.
Can creatine help with memory or brain fog after 40?
It is too early to say. The 2026 Texas A&M study saw signs of better memory scores, but the researchers call those results exploratory. That means they need to be tested again in larger trials. If brain fog is new or getting worse, check sleep, iron, thyroid and vitamin B12 with your doctor first.
Sources
- Clark C. Study finds creatine's benefits extend beyond the gym. Texas A&M Stories, 18 September 2026. stories.tamu.edu
- Cassella C. Popular supplement increases strength even without exercise, study shows. ScienceAlert, 26 September 2026. sciencealert.com
- Chun J, Liu Y, Kibler GL, et al., Kreider RB. Effects of creatine supplementation with and without exercise and diet intervention on body composition, cognitive function, and markers of health in middle-aged and older adults. Journal of the International Society of Sports Nutrition, 2026. doi:10.1080/15502783.2026.2716273
- Antonio J, Candow DG, Forbes SC, et al. Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show? Journal of the International Society of Sports Nutrition, 2021. doi:10.1186/s12970-021-00412-w
- Sales LP, Pinto AJ, Rodrigues SF, et al. Creatine supplementation (3 g/d) and bone health in older women: a 2-year, randomized, placebo-controlled trial. Journals of Gerontology: Series A, 2020, 75(5):931-938. PubMed 31257405
This article is for education only and is not medical advice. Supplements are not a substitute for a varied diet or for treatment from a qualified doctor. If you are pregnant, breastfeeding, on medication, or have a medical condition, talk to your doctor before starting any supplement. Individual results vary.
Photo: Patricia Bozan via Pexels.