Creatine and Memory: What a 2023 Review Found

This review asked whether creatine, a compound involved in brain energy use, can improve memory in healthy people. It pooled randomized trials in humans to get a clearer answer than any single study.

🔬 What the study did

Researchers searched four scientific databases up to September 2021 for randomized controlled trials comparing creatine with placebo in healthy people. They found 23 trials, kept 10 for review, and pooled 8 in the main analysis.

Trials measured memory performance. Doses ranged from about 2.2 to 20 grams per day, and interventions lasted from 5 days to 24 weeks.

📊 What it found

• Overall, creatine improved memory scores compared with placebo (SMD 0.29; 95% CI 0.04–0.53; P = 0.02).
• Older adults aged 66–76 showed a larger improvement (SMD 0.88; 95% CI 0.22–1.55; P = 0.009).
• Younger people aged 11–31 showed little change (SMD 0.03; 95% CI −0.14 to 0.20; P = 0.72).
• Dose, duration, sex, and geographic origin did not change the findings.

🧠 What it means

Across these trials, creatine was linked to better memory test scores on average. The signal was strongest in older adults and nearly absent in younger ones. This pattern suggests age may matter, but the review cannot explain why.

🎯 Study vs. claim

The study tested whether creatine changes memory test scores in healthy people. It did not test broader claims about preventing memory loss or treating any condition.

🚫 What it does NOT show

• It cannot show creatine prevents dementia or memory decline.
• It does not show benefits for people with memory problems or disease.
• It cannot explain why older adults responded more than younger ones.
• It does not establish long-term effects beyond 24 weeks.

📈 Evidence level

A systematic review and meta-analysis of randomized controlled trials in people.

✅ Confidence indicator

🤝 How much to trust it

The trust tier is Strong. Pooling many randomized trials reduces the chance that one study's quirks drive the result.

⚠️ Limitations

• Only 8 of 10 trials could be pooled in the main analysis.
• Consistency between trials was low (I² = 66%), meaning results varied.
• The older-adult finding came from a small subgroup with high variation.
• Trials used different memory tests, doses, and durations.

❓ Open questions

• Why did older adults respond more than younger people?
• Which specific types of memory improve most?
• Do benefits last beyond the longest trial of 24 weeks?

🧭 Your action plan

• ✅ Treat this as early information, not a personal plan.
• ✅ If curious, ask a professional whether creatine fits your situation.
• ✅ Keep general brain-health habits like sleep, movement, and social contact.
• ✅ Follow memory changes over time and discuss concerns with a professional.

🏁 Takeaway

Pooled trial data link creatine to modest memory gains, mostly in older adults, but questions remain.

This summary is for general information only and is not medical advice. Talk to a qualified professional before changing anything about your health.

📚 Source

Effects of creatine supplementation on memory in healthy individuals: a systematic review and meta-analysis of randomized controlled trials.. Nutrition reviews. 2023 PubMed

📚 Related Articles

• Creatine and Memory in Older Adults: A Review - Focuses on the same age group where the memory benefit was strongest, with a narrower set of studies.
• Creatine and Brain Function in Adults: What the Evidence Says - Covers a broader range of cognitive outcomes from creatine trials, not just memory.
• Creatine and Brain Health: What the Research Really Shows - Explores whether creatine actually reaches the brain and changes thinking, addressing a key mechanism question.