Linia Patel (PhD), RD investigates creatine supplementation for women’s health
Creatine is having a moment. It’s the new collagen.
Everywhere I turn – podcasts, posts, reels – someone is recommending it to every woman. As a performance nutritionist, that immediately grabs my attention. Creatine is one of the most researched sports supplements we have. I’ve used it in clinical practice for years.
But blanket supplementation? That’s where I pause.
Nutritional science evolves and good practice evolves with it. So, I’ve been asking myself: does the recent surge in enthusiasm justify a shift in how broadly we recommend creatine, particularly for women? Let’s unpack what we actually know.
What is creatine?
Creatine is a naturally occurring compound stored primarily in muscle (and to a smaller extent, the brain). Its main role is to help regenerate adenosine triphosphate (ATP) – the body’s immediate energy currency. When you lift, sprint, jump or perform any high-intensity effort, ATP is rapidly depleted. Creatine helps recycle it. More available ATP means slightly more power, slightly more output, slightly more training volume. Over time, that ‘slightly more’ compounds.
Where do we get it?
Your body produces about 1-2g of creatine per day in the liver and kidneys. You also obtain small amounts from food – primarily red meat and fish. Plant-based diets contain virtually no creatine. As a result, vegetarians and vegans tend to have lower baseline muscle creatine levels and often respond particularly well to supplementation. The body uses roughly 1-3g daily for normal physiological function. If the goal is performance optimisation, diet and endogenous production often may fall short.
The female case for creatine
For decades, creatine research was conducted predominantly in men. That is finally beginning to shift and it’s one reason creatine has gained traction in women’s health conversations.
On average, women tend to consume 30-40% less dietary creatine than men, largely due to lower overall meat intake. Some estimates suggest endogenous creatine synthesis may also be around 20% lower. Emerging data further indicate that females may have lower creatine stores in certain regions of the brain. While this area of research is still developing, it raises important questions about sex-specific physiology and nutrient needs.
Layer onto this the hormonal transitions unique to women. Declining oestrogen in perimenopause influences muscle mass, bone turnover, fluid regulation and metabolic function – all systems that intersect with creatine’s mechanisms of action. Perimenopause and post-menopause are also characterised by accelerated loss of lean mass and changes in metabolic efficiency. From a performance and healthy ageing perspective, any intervention that meaningfully enhances strength adaptations, muscle preservation or training capacity becomes clinically relevant. That said, clinically relevant does not automatically mean universally indicated.
Let’s explore what the evidence actually shows.
What the scientific evidence shows for creatine use in women
Where the research is strongest
Decades of high-quality research on creatine monohydrate consistently show that it:
- improves strength and power output
- enhances high-intensity performance
- increases training volume
- supports lean mass gains (when combined with resistance training)
- reduces fatigue during repeated sprint efforts.
Importantly, women appear to respond similarly to men when dose and training stimulus are comparable.
Creatine works best when paired with a clear training stimulus. It does not build muscle in isolation, it amplifies the effect of resistance training.
Mechanistically, creatine appears to:
- increase training capacity
- influence muscle protein kinetics
- support anabolic signalling pathways
- potentially reduce oxidative stress.
In practical terms, this means creatine may help you train harder and recover more effectively during activities that rely on short, intense bursts of energy, such as weightlifting, sprinting and HIIT. By supporting phosphocreatine availability, it allows your muscles to sustain higher outputs for longer, which over time enhances adaptation to training stimulus.
It is equally important to be clear about the limits. Without resistance training, creatine’s effects are minimal. In a two-year study of postmenopausal women supplementing 3g per day without structured exercise, there was no meaningful increase in lean mass.
“Creatine is a performance amplifier – not a substitute for training.”
Sarcopenia and ageing: A promising area
Age-related muscle loss (sarcopenia) is one of the most compelling areas for creatine use in women. Resistance training remains the cornerstone intervention, but accumulating evidence suggests creatine may enhance the anabolic environment created by training – helping preserve muscle mass and strength.
Bone health data are more indirect. While there are no robust creatine-only bone trials, improvements in muscle mass and strength often translate to improved bone loading and potentially better bone outcomes.
Again – the supplement amplifies the stimulus. It doesn’t replace it.
The “watch this space” claims
Brain health and mood
Creatine is stored in the brain and helps support mitochondrial energy production. From a mechanistic point of view, it makes sense that creatine could play an important role in brain health. Small studies suggest it may benefit cognitive performance under stress, improve resilience to sleep deprivation, support memory in older adults and help with symptoms of depression in small groups of women. However, these are mostly pilot studies with small sample sizes and short durations. Pilot studies are designed to guide future research, not to form the basis of public health recommendations. There is currently no strong evidence that creatine prevents cognitive decline. The enthusiasm around it is ahead of the data.
Promising? Yes. Proven? Not yet.
Perimenopause and brain fog
There is very little direct research in perimenopausal women. The extrapolation from brain energy metabolism research is biologically plausible but we cannot make bold claims.
Sleep
Some evidence suggests creatine may buffer cognitive effects of sleep deprivation. That is different from saying it improves sleep quality. Precision in language matters.
Side effects and safety
Creatine monohydrate is widely considered safe and well tolerated in healthy individuals. It is one of the most extensively researched supplements in sports nutrition, with a strong safety record when used at recommended doses.
There is some very preliminary laboratory research (meaning cell and mechanistic studies) suggesting that creatine metabolism may be involved in how endometriosis cells survive and grow. This does not prove that taking creatine supplements worsens endometriosis. However, it does mean we lack condition-specific safety data.
My clinical view is if you have diagnosed endometriosis and are considering creatine, speak to a clinician who understands your full medical history and current treatment plan before starting.
Creatine for women: Marginal gains or meaningful benefit? What this means in practice
In performance nutrition, if there is a strong physiological rationale and the goal is performance, even a 1% improvement can matter. Marginal gains are meaningful when strength, power and adaptation are the objective. But the question is, are the women we work with elite athletes?
What concerns me, however, is how easily the supplement industry can capitalise on vulnerability – particularly in midlife women. Women are the largest consumers of supplements, often driven by a very real desire to feel better, regain control and improve energy, body composition or cognitive clarity. Marketing is quick to promise transformation.
That said, creatine sits in an interesting space. It is the most researched supplement in sports science. It is generally safe. It is affordable. For the right person, the cost–benefit ratio may make sense. And yes, the placebo effect is powerful. If you believe something supports your training, that belief alone can enhance outcomes.
How to supplement (if you choose to)
| Form | Creatine monohydrate remains the gold standard. It is the most studied, safest and most effective form. Ignore marketing around exotic versions.
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| Dose | 3-5g daily is sufficient for most. Loading phases are unnecessary for general health goals. It typically takes around three to four weeks to fully saturate muscle stores. |
| Timing | Consistency matters more than timing. Take it daily. Pairing with a meal may improve tolerance. Adequate fluid intake is important. |
| Quality | Look for third-party tested products like Informed Sport, NSF Certified for Sport, USP, Clean Label Project. |
| Important note | Consult your doctor if you have kidney conditions, are pregnant, breastfeeding or under 18. |
Is creatine right for you?
It may be beneficial if:
- you engage in regular resistance training or HIIT
- you follow a vegetarian or vegan diet
- You are postmenopausal and prioritising muscle retention – while actively engaging in progressive resistance training.
Who may not need it?
- Sedentary individuals not undertaking resistance training.
- Those expecting dramatic cognitive or fat-loss effects.
- Anyone looking for a replacement for foundational lifestyle habits.
Creatine is not a shortcut. It is a tool – and, like all tools, its value depends entirely on how and why you use it. The key is that you get the vital foundations in place first. Eat balanced plates of whole foods most of the time. Eat enough protein throughout the day. Do progressive resistance training. Manage stress effectively. Get good in bed … and so on.
Once those pillars are consistently in place, creatine can become a strategic addition – an enhancer of adaptation – rather than a crutch compensating for gaps in the basics.
So … is creatine supplementation for women’s health over-hyped?
For muscle strength, power and training adaptations? No. The evidence is robust.
For cognitive enhancement, mood support and perimenopausal brain fog? Currently – yes, the claims are ahead of the science.
But universal supplementation? I’m not there yet.
As always in women’s health — context matters. Goals matter. Training matters.
Read Dr Linia’s recent post on choosing collagen supplements on the FitPro blog.
Further reading
- Smith, R., et al. (2025) ‘Creatine in women’s health: bridging the gap from menstruation through pregnancy to menopause’, Journal of the International Society of Sports Nutrition, 22, p.2502094.
- Antonio, J., et al. (2021) ‘Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show?’, Journal of the International Society of Sports Nutrition, p.1813.
- Butts, J., Jacobs, B. and Silvis, M. (2018) ‘Creatine use in sports’, Sports Health, 10(1), pp.31–34. doi:10.1177/1941738117737248.
- Forbes, S.C., et al. (2022) ‘Effects of creatine supplementation on brain function and health’, Nutrients, 14(5), p.921. doi:10.3390/nu14050921.
- Rawson, E.S., et al. (2008) ‘Creatine supplementation does not improve cognitive function in young adults’, Physiology & Behavior, 95(1–2), pp.130–134. doi:10.1016/j.physbeh.2008.05.009.
- Gutiérrez-Hellín, J., et al. (2024) ‘Creatine supplementation beyond athletics: benefits of different types of creatine for women, vegans, and clinical populations — a narrative review’, Nutrients, 17(1), p.95. doi:10.3390/nu17010095.
- Sales, L.P., et al. (2020) ‘Creatine supplementation (3 g/d) and bone health in older women: a 2-year, randomized, placebo-controlled trial’, Journal of Gerontology: Biological Sciences & Medical Sciences, 75(5), pp.931–938. doi:10.1093/gerona/glz162.
- Juneja, K., et al. (2024) ‘Creatine supplementation in depression: a review of mechanisms, efficacy, clinical outcomes, and future directions’, Cureus, 16(10), e71638. doi:10.7759/cureus.71638.
