Creatine for Brain Health

Research suggests that creatine supplementation may support brain health and cognitive function, particularly in contexts where brain energy metabolism is under stress, such as sleep deprivation, aging, mild traumatic brain injury, and certain mood and neurodegenerative conditions. The evidence base includes multiple narrative reviews, a systematic review and meta-analysis of 16 randomized controlled trials, and a 2026 systematic review focused on adults over 55, with the majority of findings pointing in a supportive direction, especially for memory and attention, though effect sizes are modest and the certainty of evidence is rated moderate to low across most cognitive domains. Studies indicate that the brain's creatine response appears to depend on factors such as dose, duration, age, sex, and baseline health status, and some researchers have raised concerns that commercial enthusiasm and interpretive bias may be outpacing what the data actually support, particularly for healthy younger adults under normal conditions. Overall, while the existing research is promising, most reviewers agree that larger, more rigorously designed trials with standardized measurement of both brain creatine levels and cognitive outcomes are needed before firm conclusions can be drawn.