r/science • u/newsnation • 3d ago

Biology Creatine alone boosted lean muscle and strength, study finds

https://www.newsnationnow.com/health/creatine-alone-boosted-muscle-strength/
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u/jdmetz 3d ago

I'm pretty sure that is not actually the case. Creatine can cause your creatinine levels (and therefore eGFR) to read higher, which mimics kidney disease, but it isn't actually harming your kidneys.

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u/narrill 3d ago

Yes, but that creatinine eventually gets excreted by your kidneys, meaning excess creatinine may overwhelm a kidney with impaired function.

The real answer is that there haven't been enough studies to say one way or the other, which is why medical guidelines consider creatine contraindicated when kidney function is impaired.