Cystatin C

Cognitive Decline Expert: The Disease That Starts in Your 30s but Kills You in Your 70s

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A more reliable marker of kidney function to test when creatine levels are high due to supplement use, helping to differentiate between true kidney dysfunction and creatine's effect on creatinine.

369 ‒ Rethinking protein needs for muscle and longevity, and the benefits of creatine & sauna use

Peter Attia MD