TL;DR — Clarke et al. 2020
Clarke and colleagues published a review examining the evidence for creatine supplementation specifically in female populations.
The paper highlighted that most creatine research has been conducted in males, creating a knowledge gap.
It synthesized available evidence showing that creatine is effective and safe for women, with potential unique benefits related to mood, cognition, bone health, and support during hormonal transitions such as menstruation and menopause.
Background
Historically, creatine research has overwhelmingly used male participants. Smith-Ryan et al. (2021) highlighted this disparity and called for more female-specific research (Smith-Ryan et al., 2021) .
Clarke et al. contributed to addressing this gap by reviewing the available evidence on creatine’s effects in women.
Sex-based differences in creatine metabolism exist.
Women tend to have lower endogenous creatine synthesis rates, lower dietary creatine intake (partly due to lower meat consumption on average), and different creatine kinase activity patterns compared to men.
Key Findings
Creatine Is Effective in Women
Despite fewer studies, the available evidence consistently shows that creatine supplementation:
- Increases muscle strength and power output in female athletes
- Enhances lean body mass when combined with resistance training
- Improves high-intensity exercise performance
Unique Female-Specific Benefits
The review identified several areas where women may derive unique benefits:
Mood and cognition: Women showed significant improvements in cognitive function and mood with creatine supplementation, consistent with the broader cognitive meta-analysis by Avgerinos et al. (2018) (Avgerinos et al., 2018) .
The authors noted that women may be more susceptible to brain energy deficits that creatine can address.
Menstrual cycle considerations: Hormonal fluctuations across the menstrual cycle affect energy metabolism. Creatine may help buffer energy demands during phases of increased metabolic stress.
Menopause and bone health: Post-menopausal women face accelerated bone loss and muscle decline. Creatine supplementation may help attenuate both.
Safety Confirmed
No sex-specific adverse effects were identified. Creatine did not affect hormonal profiles, menstrual regularity, or cause masculinizing effects.
Body weight changes reflected lean mass gains and water retention, not fat accumulation. The ISSN position stand confirms safety across populations (Kreider et al., 2017) .
Practical Implications
- Women should not avoid creatine: The evidence supports equal recommendation for both sexes
- Standard dosing works for women: 3-5 g/day of creatine monohydrate is appropriate
- Benefits extend beyond muscle: Mood, cognition, and bone health benefits may be particularly valuable for women
- No masculinizing effects: Creatine does not increase testosterone or cause hormonal disruption in women
- Pregnancy considerations need more research: While creatine is theoretically beneficial during pregnancy, clinical evidence is limited
Malaysian Relevance
Malaysian female athletes and fitness enthusiasts may hesitate to use creatine due to misconceptions about it being a “male supplement” or causing unwanted weight gain.
This review confirms that creatine is equally appropriate for women.
Malaysian women involved in sports such as badminton, netball, athletics, and martial arts can benefit from creatine supplementation for both performance and health.
The cognitive and mood benefits are also relevant for Malaysian women balancing career, family, and fitness demands.
Limitations
- Limited number of female-only creatine studies available for review
- Most studies had small sample sizes
- Long-term effects in women-specific contexts (pregnancy, lactation, menopause) need more investigation
- Cross-cultural and ethnic variation in creatine metabolism requires further study
Full Citation
Clarke H, Kim DH, Meza CA, Ormsbee MJ, Hickner RC. The evolving applications of creatine supplementation: could creatine improve vascular health? Nutrients.
2020;12(9):2834. doi:10.3390/nu12092834
Where This Fits in the Evidence
Clarke and colleagues set out to correct an imbalance rather than report a new trial: with fewer than a quarter of creatine study participants being female, much of what we “know” was measured in men. Their review gathers the available female data and argues that creatine is effective and safe for women, while pointing to sex-specific angles — mood, cognition, and the bone and muscle pressures of menopause — where women may gain in ways the male-dominated literature never looked for. Because the underlying female-only studies are few and small, the piece functions as an agenda for the field as much as a verdict, and pregnancy and lactation remain explicitly under-researched. For the wider evidence base, see our research library.
Sources & References
This article is based on the review by Clarke et al. published in Nutrients (2020) and contextualized with Smith-Ryan et al. (2021), Avgerinos et al. (2018), and Kreider et al. (2017).
All citations reference PubMed-indexed publications.