Creatine is a natural compound found in meat and fish, and your body produces some from amino acids. Its primary role is rapid energy production — it donates phosphate groups to regenerate ATP, the universal energy currency of your cells. Your muscles store the most, but your brain is surprisingly creatine-hungry.
Your brain uses roughly 20% of your daily energy despite being only 2% of your body weight. During demanding cognitive tasks, brain creatine stores get depleted. Supplementing with creatine increases brain creatine levels, providing an energy buffer for complex thinking, memory formation, and neuroprotection.
A systematic review in Experimental Gerontology found creatine supplementation improved short-term memory, reasoning, and cognitive processing speed, with the strongest effects seen in older adults and people under stress. Sleep-deprived individuals showed particularly dramatic cognitive improvements with creatine.
For bones, creatine combined with resistance training has been shown to increase bone mineral density more than exercise alone. This is especially relevant for post-menopausal women at risk of osteoporosis. Creatine also helps combat sarcopenia — age-related muscle loss — by improving strength and muscle protein synthesis even in elderly populations.
The evidence overwhelmingly supports creatine monohydrate — the cheapest and most studied form. Skip the expensive alternatives like creatine HCL or buffered creatine — they haven't shown superiority in any research. Take 5g daily, every day, with food. No loading phase is necessary.
Creatine is one of the safest supplements ever studied. Long-term research shows no kidney damage in healthy individuals, no dehydration risk, and no meaningful side effects at recommended doses. The only common issue is mild water retention in the first week. For longevity-focused individuals, 5g daily of creatine monohydrate is arguably the highest-value supplement you can take.
Anyone interested in evidence-based longevity strategies, health optimisation, and understanding the latest research on ageing and healthspan.
You are pregnant, breastfeeding, taking prescription medications, or have a pre-existing medical condition. This content is educational and does not replace professional medical advice.
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