Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show?
Level 5 - mechanism / opinion, no new human data
Narrative review and expert evaluation without systematic search or meta-analytic pooling
PubMed 33557850 · doi:10.1186/s12970-021-00412-w
What was done
An international panel of researchers performed an evidence-based literature evaluation addressing 12 common questions and misconceptions surrounding creatine supplementation. Topics included water retention, renal function, hair loss, cramping, safety in youth, fat mass, loading phases, efficacy in older adults and females, and non-monohydrate formulations.
What was found
The abstract provides no numerical data, effect sizes, or quantitative findings from the reviewed literature, other than noting standard recommended dosing regimens of 3–5 g/day or 0.1 g/kg of body mass/day. The authors state that accumulating evidence supports creatine's safety, tolerability, and efficacy across athletic, older, and clinical populations.
Why it matters
Creatine is widely used, but persistent concerns regarding adverse effects like kidney damage, hair loss, and cramping remain common. This review provides a centralized expert evaluation addressing those specific questions.
Limits
The paper is a narrative expert review rather than a systematic review or meta-analysis. The abstract does not specify literature search methods, study inclusion criteria, risk of bias assessments, or quantitative outcomes.
Cited by
- context No rodent studies have investigated or shown hair loss from creatine supplementation.
- supports The study finding an increase in dihydrotestosterone (DHT) levels following creatine supplementation in rugby players has not been replicated.