Kai is taking 14 supplements. Alex wants three more randomized controlled trials before recommending anything. I want to talk about the one thing buried in the research that most women have never been told: you are running a physiological deficit that nobody warned you about.
Women exhibit 70–80% lower endogenous creatine stores compared to men. Not a little less. Seventy to eighty percent less. Women also consume significantly lower amounts of dietary creatine compared to men, which means supplementation is a practical way to bring those stores up. This is not about getting jacked. This is about a basic fuel your body uses for everything from lifting a grocery bag to staying sharp in a 2pm meeting.
Creatine is not new. The scientific evidence behind it spans more than 680 studies. It is also not expensive. A bag of creatine monohydrate runs about $20 and lasts two months. I mention that because my job is to tell you what works without costing you anything you do not have, and this one clears that bar easily.
Now. Before we go further. Are you sleeping 7 hours? Eating enough protein? Walking most days? If not, start there. Creatine layered on top of poor sleep and skipped meals is like putting premium gas in a car with a flat tire. The basics come first, and the basics are undefeated. But if you have those covered, keep reading.
What the Muscle Research Actually Says
Muscles are typically 60–80% full of creatine at baseline. Supplementation can raise those stores by 20–40%, which supports short-burst energy for high-intensity movement and may aid recovery between bouts of activity. That matters when you are trying to finish your third set of squats, but it also matters on a Tuesday when you are carrying two kids and a bag of groceries up three flights of stairs.
Research supports creatine for skeletal muscle size and function in post-menopausal women, especially when combined with resistance training, with favorable effects on bone health as well. Post-menopause is when women lose muscle mass fastest, and muscle is not vanity. Muscle is the thing that keeps you independent at 75. For people over 65, creatine can help counter age-related muscle loss when combined with adequate protein, hydration, and strength training two to three times per week.
Practical translation: lift two or three times a week, hit your protein (aim for 100 grams a day; add two eggs at breakfast and a Greek yogurt mid-afternoon if you are short), and take 3–5 grams of creatine monohydrate daily. No loading phase required. No complicated timing. Just take it.
Your Brain Needs This Too
This is the part that surprised me most when I dug into the recent research. Creatine is not just sitting in your muscles. The brain is a huge consumer of energy in the body, and creatine helps replenish those energy sources to support better thinking and mental health.
A 2024 research analysis found that people who took a daily creatine supplement experienced significant improvements in memory, attention, and processing speed, with the boosts being more pronounced in women than in men. Read that again slowly: women got more cognitive benefit than men. We are the ones walking around with the bigger deficit, and we have been ignoring this supplement because it was marketed at men in tank tops.
A 2024 study demonstrated the rapid cognitive benefits of a single higher dose of creatine in sleep-deprived individuals. Participants who received creatine performed better on memory and reaction tests even under fatigue, and MRI scans revealed that brain energy levels were more stable. I am not suggesting you use creatine to compensate for bad sleep — sleep is still king. But the fact that your brain uses creatine the same way your muscles do is worth knowing.
Creatine supplementation may be especially important during perimenopause and menopause, when estrogen levels drop. Women can experience brain fog, decreased energy, loss of muscle mass, and reduced bone density. Creatine may help delay and prevent some of those issues, especially when paired with strength training. Brain fog is a commonly reported symptom throughout the menopause transition. A systematic review of 23 randomized controlled trials found that creatine improved memory compared to placebo.
Women naturally have lower creatine levels overall, and hormonal changes can lower them further. Estrogen and progesterone, the hormones that fluctuate during menstruation, perimenopause, and menopause, appear to affect how creatine is stored and used in the body. The fitness industry spent decades treating creatine as a men's supplement. The science disagrees.
The One Thing the Fitness Industry Got Right, By Accident
Creatine monohydrate has one of the cleanest safety records of any supplement in existence. Creatine has one of the strongest safety profiles of any supplement, with long-term studies showing that 3–5 grams per day is well tolerated in both men and women, with no evidence of harm to healthy kidneys or liver. Choose creatine monohydrate — the most studied and effective form — and look for third-party certifications such as NSF Certified for Sport or Informed Choice to ensure purity.
If you see early weight fluctuation, do not panic. Any initial change is usually temporary and caused by your muscles holding more water, not by fat gain. Your muscles getting better at storing fuel is not a problem. It is the point.
I want to be honest about what the research cannot yet tell us. There is a large mismatch in studies completed by men versus women. In a review of exercise science studies between 2014 and 2020, women made up only about one-third of participants, with only 6% of studies recruiting only females. Practices and strategies are often primarily informed by research conducted in males. We are working with less data. More female-specific research is coming, and it will sharpen the picture. But the data we have now points clearly enough in one direction to act on.
Creatine works best as part of a balanced diet with adequate carbohydrates, proteins, and fats; adequate hydration; consistent sleep; and a personalized strength-training routine. Nobody is going to sell you a course on that sentence, because it is too boring and too cheap. That is exactly why it is true.
You do not need a protocol. You need consistency. Sleep 7 hours. Walk. Lift something heavy two or three times a week. Hit your protein. Take 3–5 grams of creatine monohydrate. That is the list. The basics are not boring. They are undefeated.
Start here. Right now. Not Monday.
