LAUSANNE, Switzerland (AP) — The sprinter who claimed his positive test for a performance-enhancer came from eating contaminated “recovery gummies" has lost an appeal against his four-year ban .

Issam Asinga, who set the Under-20 world record at 100 meters in 2023, lost his appeal at the Court of Arbitration for Sport, which announced its ruling Thursday.

The 20-year-old Asinga, who represents Suriname, tested positive in July 2023 for a banned substance called GW1516, which was developed to build endurance and burn fat but failed medical trials when it was found to cause cancer during tests on rodents.

Asinga argued that the presence of metabolites was from his ingestion of contaminated Gatorade gummies. He said the gummies were part of a gift bag he received when he traveled to Los

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