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Analysis v1
Strong Support

Taking creatine for a week may help men’s bodies use less of a key protein building block during workouts, but it doesn’t seem to do the same for women—so the effect might be different by sex.

47
Pro
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Against

Evidence from Studies

Supporting (1)

47

Community contributions welcome

47

Effects of acute creatine monohydrate supplementation on leucine kinetics and mixed-muscle protein synthesis.

Randomized Controlled Trial
Human
2001 Sep

The study gave men and women creatine for a few days like the claim said, and found that only the men’s bodies burned less protein (leucine) as fuel — meaning creatine helped protect their muscles from breaking down, but only in men.

Contradicting (0)

0

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Effects of acute creatine monohydrate supplementation on leucine kinetics and mixed-muscle protein synthesis.

Score: 47
DOI: 10.1152/jappl.2001.91.3.1041

Similar Assertions

Taking creatine for a week may lower protein breakdown in young men by about 7.5%, but it doesn’t seem to have the same effect in young women.

47
0
90%

Taking creatine powder for about a week—first a lot, then a little—can boost the amount of creatine in your muscles by over 13%, which helps your muscles store more energy.

47
0
80%

Taking creatine for a week doesn’t make your muscles start building protein faster, even if you take a lot of it at first and then less later.

47
0
78%

Taking creatine for a week like this doesn’t make you weigh more or gain more muscle in young, healthy men and women.

47
0
78%

Taking creatine supplements doesn't seem to help trained men recover faster or reduce muscle soreness after working out in low-oxygen conditions, which means creatine might not protect muscles in every kind of workout.

58
0
75%