Creatine benefits for women: what the research says

Research in women looks at three areas where menopause adds pressure: cognition, energy, and muscle mass. Studies show that women have 70-80% lower creatine reserves than men, and that this gap widens as oestrogen declines (Smith-Ryan et al., 2021). Supplementation fills that deficit. Studies report measurable effects on memory, strength, and endurance. For physical performance during repeated bursts of short-term exercise, creatine is officially recognised by EFSA.

Below, we cover the key benefits, backed by research.

1. Less brain fog, better memory

Creatine isn't just fuel for your muscles. About 5% of your body's creatine is in your brain, where it serves as a rapid energy source for your neurons.

Dechent et al. (1999) showed with MRI scans that oral creatine supplementation (20g/day) measurably increases total creatine concentration in the brain. Rae et al. (2003) found that 5g of creatine per day for six weeks significantly improved working memory and abstract reasoning (p < 0.0001) in a double-blind, placebo-controlled study.

A recent meta-analysis of 16 randomized studies (Xu et al., 2024) confirms that creatine improves memory, attention, and processing speed. The effects were strongest in women and in individuals under stress or sleep deprivation.

For women in menopause, this is relevant: ongoing research links the brain fog so many women experience to declining oestrogen and creatine levels. Whether you personally notice a difference can vary from person to person.

2. More energy, less fatigue

Creatine plays a central role in the ATP system, your cells' energy system. When your creatine reserves drop (due to menopause, stress, or insufficient dietary intake), your cellular energy production drops too.

According to Brosnan & Brosnan (2007), the body produces creatine daily via the liver, kidneys, and pancreas, but women produce significantly less than men. During menopause, that production slows further because oestrogen plays a role in creatine synthesis.

Creatine supplementation restores those reserves. The effect isn't dramatic on day one, but it builds over 2-4 weeks as your muscles and brain become saturated again. Women who take creatine often report that the "constant tiredness" they had accepted as normal slowly fades.

3. Maintaining muscle mass

Women lose an average of 3-8% of muscle mass per decade after age 40, and this accelerates after menopause. Muscle loss (sarcopenia) is one of the most underestimated consequences of menopause, with direct impact on strength, balance, metabolism, and bone health.

Chilibeck et al. (2023) conducted a two-year randomized controlled trial in postmenopausal women. The group that took creatine combined with resistance training retained more bone density and muscle mass than the placebo group.

Smith-Ryan et al. (2021) conclude that creatine is effective for maintaining skeletal muscle mass and function in postmenopausal women, especially at higher dosages (0.3 g/kg/day) combined with training.

4. Bone health

Bone loss (osteoporosis) is a common consequence of menopause due to declining oestrogen. The two-year study by Chilibeck et al. (2023) showed that creatine combined with resistance training maintained femoral neck bone mineral density better than training alone.

This makes creatine one of the few supplements where research points to both muscle and bone-related effects in postmenopausal women, in each case combined with strength training.

5. Mood and mental resilience

A lesser-known benefit: creatine also appears to positively influence mood. Smith-Ryan et al. (2021) report that both preclinical and clinical research points to positive effects of creatine on mood and cognition, "possibly by restoring the energy balance in the brain."

This is relevant for women in perimenopause and menopause, where mood swings and lower mental well-being are common complaints.

How much creatine do you need?

The standard dose of 3-5g per day is sufficient for muscle benefits. But researchers studying cognitive benefits in women use 10g or more to also reach the brain (Dechent et al., 1999; Smith-Ryan et al., 2021).

That's also why Zesty delivers 10g of creatine per shot: not just for your muscles, but for your brain too.

Summary

Benefit	What the research shows
Brain fog / memory	Measurable improvement in working memory and processing speed
Energy	Restores cellular energy production via the ATP system
Muscle mass	Maintained in postmenopausal women combined with training
Bone health	Maintained femoral neck bone density after 2 years of supplementation + training
Mood	Positive effects on mood and mental resilience

Also read

• Creatine side effects in women: what does the research say?
• Creatine & Menopause: the complete guide
• Best supplements for women in menopause

References

• Smith-Ryan, A.E. et al. (2021). Creatine Supplementation in Women's Health: A Lifespan Perspective. Nutrients, 13(3), 877.
• Chilibeck, P.D. et al. (2023). A 2-yr Randomized Controlled Trial on Creatine Supplementation during Exercise for Postmenopausal Bone Health. Medicine & Science in Sports & Exercise, 55(10), 1750-1760.
• Dechent, P. et al. (1999). Increase of total creatine in human brain after oral supplementation of creatine-monohydrate. American Journal of Physiology, 277(3), R698-704.
• Rae, C. et al. (2003). Oral creatine monohydrate supplementation improves brain performance: a double-blind, placebo-controlled, cross-over trial. Proceedings of the Royal Society B, 270(1529), 2147-2150.
• Xu, Y. et al. (2024). The effects of creatine supplementation on cognitive function in adults: a systematic review and meta-analysis. Frontiers in Nutrition, 11, 1424972.
• Brosnan, J.T. & Brosnan, M.E. (2007). Creatine: endogenous metabolite, dietary, and therapeutic supplement. Annual Review of Nutrition, 27, 241-261.
• Dr. Stacy Sims: Why Active Women Need Creatine