The Claim

Twelve weeks of 5-gram daily creatine monohydrate supplementation has no significant effect on total testosterone, free testosterone, or creatinine levels in healthy young male resistance-trained individuals.

Source: Does creatine cause hair loss? A 12-week randomized controlled trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
75score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

Taking 5 grams of creatine monohydrate daily for 12 weeks does not change levels of testosterone or creatinine in healthy young men who lift weights.

See the scientific wording

Twelve weeks of 5-gram daily creatine monohydrate supplementation does not significantly affect total testosterone, free testosterone, or creatinine levels in healthy young male resistance-trained individuals, indicating no measurable impact on systemic androgen metabolism or kidney function in this population.

Why this might work

Taking creatine daily does not change how the body makes or uses testosterone, and it does not increase how much creatinine the kidneys produce because the body already makes enough creatine naturally and handles extra creatine without triggering hormonal or kidney changes.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Does creatine cause hair loss? A 12-week randomized controlled trial

    This study found that taking 5 grams of creatine daily for 12 weeks didn’t change testosterone levels or cause hair loss in guys who lift weights — same as those who took a placebo. So, creatine doesn’t mess with hormones or kidneys in healthy young men.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.