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12-24-2011, 11:28 AM
rafal majka
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Join Date: Sep 2004
Country: Japan
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Very interesting development in anti-doping:

Associated Press

LONDON -- Some dietary advice for athletes at the London Olympics: Watch how much liver you eat. Too much can raise the risk of testing positive for clenbuterol.

The official advice from Britain comes after the World Anti-Doping Agency issued a warning last month about the dangers of athletes eating contaminated meat.

Clenbuterol is on WADA's list of banned substances as an anabolic agent that builds muscle and burns fat, and athletes who test positive can face bans of up to two years.

In advice based on evidence from the Food Standards Agency, U.K. Anti-Doping warns: "Athletes should be wary of consuming large quantities of liver."

Spanish cyclist Alberto Contador blamed contaminated steak from Spain after he tested positive for clenbuterol during his 2010 Tour de France victory. His case is under appeal with the Court of Arbitration for Sport.

Contaminated meat was also blamed when five Mexican soccer players tested positive for clenbuterol before the Gold Cup in June. FIFA said more than 100 players at the Under-17 World Cup in Mexico also were contaminated by the substance.

The British risk assessment is based on eating bovine liver, one of the organs where the highest concentration of clenbuterol lingers.

"The FSA cannot rule out the possibility that if a large portion of liver is consumed containing clenbuterol at permitted residue limits, urine collected shortly after consumption may contain detectable levels of clenbuterol," UKAD said Thursday to The Associated Press. "This depends on many factors including the amount consumed, the timing of the urine test and the analytical methods used."

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