The Claim

Analysis of sports dietary supplements reveals that 12-58% of products contain substances prohibited by the World Anti-Doping Agency (WADA), creating a substantial risk of unintentional doping among athletes.

Source: Intended or Unintended Doping? A Review of the Presence of Doping Substances in Dietary Supplements Used in Sports

What the research says

Supports is higher

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

Supports
20score
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.

Quantitative
1 study reviewed
In plain English

Many sports supplements you can buy contain hidden illegal drugs that athletes aren't allowed to take. Studies found that between 12 and 58 out of every 100 supplements have these banned substances in them, which could accidentally make an athlete fail a drug test.

See the scientific wording

Dietary supplements marketed for sports contain WADA-prohibited substances in 12-58% of products analyzed, representing a significant risk of unintentional doping for athletes

What the research says

1 study

  1. Study: Intended or Unintended Doping? A Review of the Presence of Doping Substances in Dietary Supplements Used in Sports

    This study reviewed many other studies about sports supplements and found that 12-58% of them contained banned doping substances, exactly matching what the claim says. This confirms that athletes using these supplements risk testing positive for doping without knowing it.

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.