Creatine for Women Over 40: What the Research Says About Muscle, Mood, and Brain Health

If you have spent any time in the women’s health corner of the internet over the past few years, you have probably heard the message: creatine is for women too.

What used to be filed under “supplements for guys at the gym” is now turning up in conversations about perimenopause, brain fog, bone density, mood, strength, and longevity. And for good reason.

Creatine is one of the most well-studied supplements we have. But like anything that gets popular online, the science can quickly get flattened into hype.

Let’s look at what the research actually says: why women may have a unique reason to benefit from creatine, what changes after 40, where the evidence is strongest, and how to use it in a way that is realistic, safe, and consistent.

Why women’s bodies are different, and why that matters when taking creatine here

Creatine is a compound your body makes naturally, primarily in your liver, kidneys, and pancreas. It is stored mostly in skeletal muscle, where it helps regenerate ATP, the molecule your cells use for energy. You also get creatine from food, mainly red meat and fish.

Here is the part most people do not know: women tend to have substantially lower creatine stores than men. The landmark 2021 review on creatine in women’s health by Smith-Ryan and colleagues reported that females have approximately 70 to 80 percent lower endogenous creatine stores compared to males.

That matters because women also tend to consume less dietary creatine, in part because they often eat less red meat than men. Creatine synthesis and metabolism may also shift across hormone-influenced life stages, including the menstrual cycle, pregnancy, postpartum, perimenopause, and menopause.

In other words, women often start with lower creatine stores, take in less from food, and experience changes in creatine metabolism during the exact life stages when the body is also navigating shifting estrogen, muscle changes, bone changes, sleep disruption, mood shifts, and cognitive demands.

That is why creatine for women is an important and meaningful conversation about physiology, aging, and cellular energy.

What happens to women’s bodies after 40

Most women begin perimenopause in their early-to-mid 40s. Estrogen levels start to fluctuate, then eventually decline. Three changes matter most for the creatine conversation.

Lean muscle mass starts to decline

Age-related muscle loss becomes more common with time, and the menopausal transition can make it harder to maintain strength and lean mass. Less muscle can affect metabolism, strength, balance, and long-term resilience.

Bone density changes

Estrogen helps regulate bone turnover. As estrogen declines, bone loss can accelerate, especially in the years surrounding menopause.

The brain changes too

Many women report brain fog, slower processing, mood changes, and disrupted sleep during perimenopause. These changes are not imagined. The menopausal transition involves shifts in brain energy metabolism, neurotransmitter activity, and sleep regulation.

That is why creatine is so relevant in midlife. It is vital to helping support the energy demands of our tissues that are working hard during a major biological transition.

Benefits of creatine for women over 40

Muscle and strength: the clearest evidence

Of everything creatine does, this is the most established.

A growing body of research shows that creatine supplementation, especially when combined with resistance training, can support muscle strength, lean mass, and functional performance in midlife and postmenopausal women.

The 2021 Smith-Ryan review found that postmenopausal women may experience benefits in skeletal muscle size and function, and potentially favorable effects on bone, when creatine is combined with resistance training.

A 2025 study of peri- and postmenopausal women participating in a twice-weekly strength training program with creatine showed significant gains in lower-body strength after 14 weeks.

Stanford Lifestyle Medicine has also highlighted creatine as one of its top supplements for women over 40, citing its role in supporting muscle function, muscle size, and bone density when paired with resistance training.

The practical takeaway: creatine works best when paired with strength training. The supplement alone does not build muscle. It helps support the cellular energy your muscles need to train, recover, and adapt over time.

Brain and cognition: where it gets really interesting

Your brain is metabolically expensive. It uses about 20 percent of your daily energy, despite making up only about 2 percent of your body weight.

Creatine helps shuttle energy where it is needed. Emerging research suggests this may be especially relevant when the brain is under stress, such as during sleep deprivation, hormonal shifts, mental fatigue, or aging.

A 2023 review in Sports Medicine by Candow and colleagues outlined the potential role of creatine in brain health, including cognition and memory, particularly in aging adults or during periods of metabolic stress.

A 2025 study using a high single dose of creatine monohydrate found that creatine helped rebalance brain energy changes induced by sleep deprivation.

And in 2025, the CONCRET-MENOPA randomized controlled trial studied creatine supplementation in perimenopausal and menopausal women. The trial found that medium-dose creatine supplementation significantly improved reaction time and increased frontal brain creatine concentrations compared to placebo, with a signal toward reduced mood swing severity. The interventions were well tolerated, with no serious adverse effects.

One important note: this study used enhanced-solubility forms of creatine, not standard creatine monohydrate. Still, it adds to a growing body of evidence suggesting that creatine may have meaningful relevance for women’s brain energy and cognitive function during midlife.

For women in their 40s who are dealing with disrupted sleep, cognitive shifts, and the cumulative mental load of daily life, this research is worth paying attention to.

Mood: a smaller and promising signal

The mood research on creatine is younger and smaller than the muscle research, but it is pointing in an interesting direction.

The 2021 Smith-Ryan review concluded that pre-clinical and clinical evidence suggests creatine may have positive effects on mood and cognition, potentially by supporting brain energy homeostasis. The effect may be especially relevant in women because of their lower baseline creatine stores and hormone-related shifts across the lifespan.

A 2025 narrative review by the same lead author also noted that creatine may support mood and cognitive function in women across life stages.

A word of care: creatine is not a treatment for depression, anxiety, or mood disorders. It should not replace professional care, therapy, medication, or individualized medical support.

But for women navigating the mood turbulence that can accompany normal life transitions, like perimenopause and menopause, the data suggest creatine may play a supportive role in maintaining healthy brain energy and cognitive function.

Does creatine support bone health?

Some studies suggest that creatine, when combined with resistance training, may support bone health in postmenopausal women. The mechanism is likely indirect: stronger muscles place more healthy mechanical stress on bone, which helps stimulate bone adaptation. There may also be direct effects on bone-forming cells, though more research is needed.

Creatine is not a replacement for strength training, adequate protein, vitamin D, calcium, or medical care for bone density concerns. But for women who are already lifting, it may be another useful tool in the healthy aging toolkit.

How much creatine should women over 40 take?

Most creatine monohydrate research typically uses 3 to 5 grams per day.

A lot of women-specific research uses a similar range, though some postmenopausal studies have used much higher doses, such as 0.3 grams per kilogram of body weight per day. For a 150-pound woman, that would be roughly 20 grams per day. 

For brain-specific benefits, some researchers suggest higher doses may be needed to fully saturate brain creatine stores. However, the CONCRET-MENOPA trial found meaningful increases in frontal brain creatine concentrations using 1,500 mg (1.5 grams) per day of enhanced-solubility creatine formulations.

For most women starting out, 3 to 5 grams per day, taken consistently, is the most evidence-backed and practical approach.

When should women over 40 take creatine?

Timing matters less than consistency.

Daily intake is more important than the exact time of day. If you are using creatine to support exercise performance, taking it within 30 to 90 minutes of training is reasonable. If you are using it for general healthy aging or cognitive support, morning may be easiest.

The best time to take creatine is the time you will remember to take it every day.

What form of creatine is best?

Creatine monohydrate remains the most studied form by far. It is the form used in the majority of clinical trials and has decades of safety data.

Newer forms, including creatine hydrochloride, creatine ethyl ester, and magnesium creatine chelate, often claim better absorption or fewer side effects. But the evidence showing clear superiority over creatine monohydrate is still limited.

For most people, the bigger question is not the type of creatine. It is whether the format is easy to take consistently.

Traditional creatine monohydrate powders can be gritty, chalky, and difficult to fully dissolve in water. Some women also report bloating, water retention, or digestive discomfort, especially when starting creatine or using larger serving sizes.

That matters because creatine only works when you take it consistently.

A note on Rho’s approach

Rho’s Liposomal Creatine Monohydrate was designed for the two reasons many women do not stick with creatine: the gritty texture of traditional powders and the digestive discomfort some people experience with standard formats.

Each tablespoon delivers 3,000 mg (3 grams) of creatine monohydrate, the most researched form of creatine, in a smooth liposomal liquid. The formula uses phosphatidylcholine-based liposomes, which are designed to help protect nutrients through digestion and support efficient delivery.

In practice, that means no clumps, no shaker bottle, and no chalky finish. It is a much simpler way to make creatine part of your daily routine, whether you take it in the morning, after training, or blended into a shake.

Rho Liposomal Creatine Monohydrate is third-party tested, manufactured in a GMP certified facility in the U.S., and confirmed stable over 21 months. It is vegan and free from sugar, dairy, gluten, GMOs, soy, and unnecessary additives.

If you have tried creatine before and did not stick with it, the issue may not have been creatine itself. It may have been the format. A smooth liposomal liquid makes daily consistency much easier, and consistency is where creatine’s benefits come from.

Who should be cautious with creatine?

Creatine has one of the strongest safety profiles in the supplement category when used at recommended doses in healthy adults. Research has not shown evidence of harm to kidney, liver, gastrointestinal, or cardiovascular function in healthy women using recommended amounts.

That said, some people should check with a healthcare provider first.

Talk to your doctor before starting creatine if you:

• Have pre-existing kidney disease

• Are pregnant or breastfeeding

• Take prescription medications, especially diuretics or medications that affect kidney function

• Have been advised to monitor protein, creatinine, or kidney-related lab markers

Adequate hydration also matters. Creatine helps pull water into muscle cells, which is part of how it works. Make sure you are drinking enough water throughout the day.

FAQ: Creatine for women over 40

Is creatine good for women over 40?

Yes. Creatine may help support muscle strength, exercise performance, brain energy, and healthy aging, especially when paired with resistance training. Women also tend to have lower endogenous creatine stores than men, which may make consistent intake especially relevant during midlife.

Does creatine help with perimenopause?

Creatine is not a treatment for perimenopause symptoms. However, research suggests it may support areas that often change during perimenopause, including muscle function, cognition, mood, and brain energy. Emerging research in perimenopausal and menopausal women is extremely promising, but still early.

How much creatine should women take?

Most research supports 3 to 5 grams of creatine monohydrate per day. Consistency matters more than timing, and 3 to 5 grams daily is the most common practical starting point.

Does creatine cause bloating?

Some people experience temporary water retention or digestive discomfort, especially with larger doses or gritty powders. Choosing a format that is easy to take consistently, like Rho’s, may help improve tolerance and routine adherence.

Is creatine safe for women?

Creatine has a strong safety profile in healthy adults when used at recommended doses. People with kidney disease, those who are pregnant or breastfeeding, or anyone taking medications that affect kidney function should speak with their healthcare provider first.

Do women need to load creatine?

Not necessarily. Creatine loading typically involves taking a higher amount for several days to saturate muscle stores faster. But many people skip the loading phase and simply take 3 to 5 grams daily. It may take a little longer to saturate stores, but it is often easier on digestion, results in less side effects such as headaches, and is much more realistic for long-term use.

The bottom line

If you are a woman in your 40s or beyond, creatine is one of the most well-researched, low-risk, high-leverage supplements you can add to your routine, especially if you are also doing resistance training.

The muscle and strength benefits are the clearest. The brain and mood benefits are emerging and increasingly interesting, especially during perimenopause and the years after.

Three grams per day, taken consistently, in a form you will actually use every day. That is the protocol.

 

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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Author note: Dr. Erika Aranda Ost serves as Vice President of Science and Innovation at Rho Nutrition.

 

Sources

1. Smith-Ryan AE, Cabre HE, Eckerson JM, Candow DG. Creatine Supplementation in Women’s Health: A Lifespan Perspective. Nutrients. 2021;13(3):877.

2. Smith-Ryan AE, DelBiondo GM, Brown AF, et al. Creatine in women’s health: bridging the gap from menstruation through pregnancy to menopause. Journal of the International Society of Sports Nutrition. 2025.

3. Korovljev D, Ostojic J, Panic J, et al. The Effects of 8-Week Creatine Hydrochloride and Creatine Ethyl Ester Supplementation on Cognition, Clinical Outcomes, and Brain Creatine Levels in Perimenopausal and Menopausal Women, CONCRET-MENOPA: A Randomized Controlled Trial. Journal of the American Nutrition Association. 2025.

4. Hall L, Klassen S, Holbein JM, Waters J. Impact of creatine supplementation on menopausal women’s body composition, cognition, estrogen, strength, and sleep. Journal of the International Society of Sports Nutrition. 2025.

5. Candow DG, Forbes SC, Ostojic SM, et al. “Heads Up” for Creatine Supplementation and its Potential Applications for Brain Health and Function. Sports Medicine. 2023.

6. Gordji-Nejad A, Matusch A, Kleedörfer S, et al. Hemispheric asymmetry in high-energy phosphate consumption during sleep-deprivation is balanced by creatine. Frontiers in Neuroscience. 2025.