Creatine Benefits for Women: What the Trials Measured

Strength before menopause

Smith-Ryan and colleagues, Nutrients, 2021, wrote a lifespan review because most creatine trials enrolled men. Their abstract says women have 70 to 80 percent lower endogenous creatine stores than men. The same paper reports a separate measurement: resting creatine inside the muscle has been found about 10 percent higher in women than in men. One figure is whole-body stores and diet. The other is the concentration already in muscle. They are not a single number you can average.

On performance, the review treats creatine as useful for strength, power, and hard efforts in women, and it says those findings have come without marked changes in body weight. It describes a study of 14 collegiate soccer players who loaded at 15 grams a day for five days, then took 5 grams during 13 weeks of lifting. In that account, bench press rose 18 percent on creatine and 9 percent on placebo, and squat rose 24 percent versus 12 percent, while body weight and fat-free mass rose similarly in both groups. A different trial the review discusses, Ferguson and Syrotuik, put physically active women ages 18 to 35 through about 10 weeks of training. Creatine did not beat training alone for strength or body composition, and body weight did not change significantly in either group.

So the premenopausal record is not a clean win in every protocol. Smith-Ryan's summary still treats strength and performance as the supported use before menopause. The dose those papers cluster around, once any loading week is over, is about 3 to 5 grams of creatine monohydrate. How to take that, including rest days, is on how to take creatine.

Lean mass is a smaller finding

Delpino and colleagues, Nutrition, 2022, pooled 35 randomized trials and 1,192 participants for lean body mass. Across that pool, creatine was associated with 0.68 kg more lean mass (95% confidence interval 0.26 to 1.11). With resistance training the difference was 1.10 kg (0.56 to 1.65). Without exercise it was 0.03 kg (−0.65 to 0.70), which is not a detectable effect. Split by sex, men gained 1.46 kg (0.47 to 2.46). Women gained 0.29 kg (−0.43 to 1.01), and that interval crosses zero, so the women's result was not statistically significant. The authors' conclusion is that men on creatine respond more favorably than women during resistance training.

That is lean mass, not the bathroom scale, and it is not fat. A page that promises women the men's lean-mass headline is quoting the wrong row. The scale question, including water, is on will creatine make me gain weight.

After menopause, strength and a small lean-mass change

Two reviews answer different questions, so they should not be blended into one slogan.

dos Santos and colleagues, Nutrients, 2021, reviewed creatine plus resistance training in older and postmenopausal women. Ten trials met their review (211 participants). The meta-analysis found a significant upper-body strength increase (7 studies, 142 women, p = 0.04, standardized mean difference 0.35, 95% CI 0.02 to 0.69). Lower-body strength was not significant overall (p = 0.18, SMD 0.22, −0.10 to 0.55). In trials lasting at least 24 weeks, both upper body (4 studies, 97 women, p = 0.05, SMD 0.41, 0.01 to 0.82) and lower body (4 studies, 100 women, p = 0.03, SMD 0.44, 0.04 to 0.84) favored creatine. Muscle mass did not. They rated the evidence low on GRADE and said better trials are still needed. Mean ages in the included studies ran from 56 to 70.

Naddafha and colleagues, 2026, pooled postmenopausal creatine monohydrate trials: seven randomized trials, 608 women, mean age about 62, lasting 12 to 104 weeks. Lean mass was 0.37 kg higher (0.05 to 0.69) in five trials (338 women). Leg press was 7.5 kg higher (2.2 to 12.8) in three trials (111 women). The authors say the benefits are clearest at 5 grams a day or more together with resistance training, and that 3 grams a day or less without resistance training showed no measurable effect. Adverse events were mild and similar to placebo, and the renal indices they tracked were unchanged. The review was not prospectively registered. Most trials had some concerns about bias. One large preregistered double-blind trial was at low risk.

Smith-Ryan's 2021 narrative also describes short, high-dose loading in postmenopausal women, on the order of 0.3 grams per kilogram per day for about a week (around 20 grams), with a small fat-free mass increase in the study they summarize (0.52 kg). The same review notes a longer protocol, 20 grams for five days then 5 grams for 23 weeks, that did not beat placebo on muscle mass, bone, strength, or function, and a 1 gram daily dose for 52 weeks that did not beat placebo on fat-free mass, bone, or function. A loading week and a 5 gram habit are not the same experiment. The age-specific write-up on this site is creatine for women over 50, and the transition years are on creatine for perimenopause.

Bone, mood, and the claims that outrun the trials

Naddafha and colleagues found no overall change in bone mineral density. Smith-Ryan's review is uneven on bone: one section says creatine, alone or with training, appears to provide no benefit for bone physiology in postmenopausal women, and a later summary sentence says training plus creatine augments bone mineral density. Those sentences cannot both be the result you quote. For bone, this page uses the 2026 meta-analysis: no overall change.

The same 2021 review discusses mood and cognition. It is a narrative review, not a single mood meta-analysis with one effect size you can put on a label. The trial-by-trial brain page is creatine for memory. If a brand turns "may matter for the brain" into a promise for brain fog in perimenopause, that promise is ahead of the trials.

Creatine is not a fat-loss drug. Antonio and colleagues' 2021 review concludes that supplementation does not increase fat mass. That is a different sentence from "the scale will fall." Dieting while lifting is covered on creatine for women's weight loss.

What these benefits do not cover

Pregnancy, breastfeeding, and kidney disease are not a dose we will invent from a gym paper. Teens are outside the adult pages on this site. Side effects in the widest count, Kreider and colleagues 2025, were about as common as placebo, with two study-level exceptions (gut and cramps) that were not significant at the participant level. That tally is on creatine side effects. Skin complaints, which are not the same thing as a counted acne trial, are on does creatine cause acne.

A first tub, if you are starting from the strength finding rather than a loading week, is laid out on creatine for women beginners. The gram math is on the dose calculator.

What we still do not know

Women are still the smaller share of the older performance literature. Delpino's female lean-mass interval includes zero. dos Santos rated their strength evidence low. Naddafha's bone result is "no overall change," which is not the same as a trial powered to rule out a small local effect at one hip site. Cycle phase is a hypothesis in Smith-Ryan's review, not a dosing calendar we can hand you. If a newer women's trial lands with a preregistered outcome, this page should change.

Common questions

Sources

• Smith-Ryan AE, et al. 2021. Creatine supplementation in women's health: a lifespan perspective. Nutrients. Used for lower whole-body stores, the separate muscle-concentration note, premenopausal strength, the soccer and Ferguson accounts, postmenopausal loading versus low-dose nulls, and the conflicting bone sentences.
• Delpino FM, et al. 2022. Influence of age, sex, and type of exercise on creatine and lean body mass. Nutrition. Used for 35 trials, 1,192 participants, the 0.68 kg overall lean-mass difference, the training and no-exercise splits, and the male versus female subanalyses.
• dos Santos EEP, et al. 2021. Creatine plus resistance training in older females. Nutrients. Used for 10 trials, the upper-body strength result, the 24-week subanalyses, the null muscle-mass result, and the low GRADE rating.
• Naddafha S, Antonio J, Kreider RB, Stout JR. 2026. Creatine monohydrate in postmenopausal women. J Int Soc Sports Nutr. Used for seven trials, 608 women, lean mass, leg press, unchanged bone density, and the dose-plus-training pattern.
• Antonio J, et al. 2021. Common questions and misconceptions about creatine supplementation. Used for the conclusion that creatine supplementation does not increase fat mass.
• Kreider RB, et al. 2025. Safety of creatine supplementation. Pointed to from the side-effects page for the 685-trial tally. Not re-quoted number by number here.

Editorial note: This page is informational and does not provide personalized medical advice. Study findings describe groups, not guarantees for individuals. If you have a medical condition, take prescription medication, are pregnant, or have symptoms that concern you, discuss supplement use with a qualified clinician.