Should I take creatine?
Creatine is not an anti-aging miracle. It is one of the better-supported supplements for muscle performance and training capacity, which are relevant to healthspan.
Clinical answer
Short answer
If you resistance train, creatine monohydrate is reasonable. I would frame it as muscle-and-performance support, not proven lifespan extension.
Who should consider it
People doing strength training, older adults trying to preserve muscle and power, vegetarians/vegans with lower dietary creatine intake, and women in midlife who want a low-drama performance support.
Who should skip or avoid it
People with significant kidney disease unless their clinician is involved, anyone who cannot tolerate GI effects, and anyone expecting creatine to replace progressive training and adequate protein.
What to measure before / after
Training performance, lean mass or strength markers, symptoms, weight/water change, and kidney function if there is kidney disease, high-risk medication use, or clinician concern.
What I’d do first
Use creatine monohydrate, usually 3–5 g daily. Skip loading unless there is a specific reason. Pair it with strength training and enough protein.
What would change my mind
I would upgrade the longevity claim if long-term trials showed fewer fractures, falls, disability, or cognitive decline. I would stop if kidney safety concerns appeared in better data for relevant risk groups.
What creatine is actually good for
Creatine helps regenerate ATP during short, high-intensity efforts. That is why the evidence is strongest for strength, power, and training volume. Those outcomes matter because muscle and power are part of the longevity stack.
The honest claim is narrower than the internet claim: creatine can help you train better. Training better can help preserve muscle. Preserving muscle is relevant to healthspan.
References & citations
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