Why creatine is not just for the gym
Creatine has a significant image problem. It is associated with bodybuilding, protein shakes, and men lifting heavy weights. This association has meant that for decades, most creatine research has been conducted in male populations — and most women have never considered it relevant to them.
That is changing. The emerging evidence on creatine for women — and specifically for women in perimenopause — is compelling enough that it deserves serious attention.
What creatine actually does
Creatine is a naturally occurring compound synthesised in the body from the amino acids arginine, glycine and methionine. It is also obtained from dietary sources — primarily red meat and fish. It is stored primarily in muscle tissue as phosphocreatine, where it plays a central role in energy production.
The mechanism is straightforward: phosphocreatine donates phosphate groups to regenerate ATP, the primary energy currency of the cell. This is particularly relevant in tissues with high and rapid energy demands — muscle and brain.
Creatine is not a synthetic compound. It is not a steroid. It is a nutrient that the body produces and uses constantly, and that dietary intake and supplementation can increase beyond endogenous production levels.
The perimenopause case
Several aspects of the perimenopause transition make creatine specifically relevant.
Muscle mass — oestrogen plays a significant role in muscle protein synthesis and the maintenance of muscle mass. As oestrogen declines during perimenopause, women experience accelerated loss of muscle tissue — a process called sarcopenia. This affects not just physical strength but metabolic rate, insulin sensitivity, and long-term health outcomes including fracture risk and cardiovascular health.
Creatine supplementation has a well-established evidence base for supporting muscle mass and strength, particularly when combined with resistance exercise. A 2021 meta-analysis found that creatine supplementation in older adults significantly improved muscle mass and functional strength compared to placebo.
Cognitive function — the brain is one of the highest energy-consuming organs in the body. Creatine plays a role in cerebral energy metabolism, and there is growing evidence that creatine supplementation supports cognitive performance — particularly under conditions of stress or sleep deprivation.
A 2022 study found that creatine supplementation improved working memory and processing speed following sleep deprivation. For perimenopausal women experiencing fragmented sleep — which describes the majority — this finding is directly relevant.
Energy metabolism — fatigue is one of the most consistently reported perimenopause symptoms. While the mechanisms are multiple, cellular energy production is part of the picture. Creatine supports mitochondrial function and ATP regeneration, which underpins the energy availability that fatigue disrupts.
Mood — there is emerging evidence linking creatine to mood regulation. Research has found associations between low creatine levels and depression, and preliminary studies suggest that creatine supplementation may have antidepressant effects, potentially through its role in brain energy metabolism. This evidence is early-stage but mechanistically plausible.
The dietary gap for women
Creatine is obtained primarily from red meat and fish. Women who eat less meat — whether for health, ethical or environmental reasons — have lower baseline creatine levels. Post-menopausal vegetarian and vegan women have been shown to have significantly lower muscle creatine stores than omnivores.
The body synthesises approximately 1-2g of creatine per day endogenously. Dietary intake for omnivores adds a similar amount. Supplementation at 3-5g per day raises muscle creatine stores to saturation — a level that cannot be achieved through diet alone.
For women who are reducing meat intake as they age — a common pattern — supplementation becomes the only way to maintain adequate creatine status.
What the research says specifically about women
A 2021 review in Nutrients examined the evidence on creatine supplementation specifically in females. It found evidence supporting benefits for muscle mass, strength, bone density, mood and cognitive function — and noted that women may actually show greater relative response to creatine supplementation than men, potentially because their baseline dietary intake is typically lower.
The review also addressed safety — one of the most common concerns about creatine. The evidence on long-term creatine supplementation is extensive. It is one of the most studied supplements in existence, with a strong safety profile at standard doses in healthy adults.
Form and dose
Creatine monohydrate is the most researched form and the one with the strongest evidence base. Other forms — creatine HCl, creatine ethyl ester — are marketed as superior but have less evidence and are typically more expensive.
The standard dose used in research is 3-5g per day. There is no evidence that higher doses produce additional benefit for most people, and the loading protocols sometimes recommended are not necessary for long-term supplementation.
Creatine monohydrate is unflavoured and mixes easily with water. It does not need to be taken with any particular food or at any particular time of day.
The practical summary
- Creatine is a well-researched, safe nutrient with a documented role in muscle energy metabolism and brain function
- The perimenopause transition — with its effects on muscle mass, cognitive function, energy and mood — makes creatine specifically relevant for women in this life stage
- Women typically have lower baseline creatine levels than men due to lower meat intake
- Creatine monohydrate at 3-5g per day is the evidence-based approach
- The bodybuilding association is a cultural artefact, not a reflection of what the evidence shows
This article is for informational purposes only and does not constitute medical advice. If you are experiencing significant perimenopause symptoms, please speak to your GP or a qualified menopause specialist.