of the most widely used sports supplements.
For healthy adults taking standard doses, existing research generally does not show that creatine causes kidney damage.
However, the situation is different for people who already have impaired kidney function or who are taking medications that can affect the kidneys.
Creatine supplementation can also raise blood creatinine levels because creatinine is a breakdown product of creatine. That may complicate interpretation of certain kidney blood tests.
Therefore, people with known kidney disease should discuss creatine supplementation with a healthcare professional rather than assuming that&
