Olympic runner says tainted burrito led to positive test for banned substance

Shelby Houlihan, the American record holder in the 1,500 and 5,000 meters, posted on social media that she’s been banned for four years following a positive test for what she concluded was a tainted pork burrito.

14, notifying her that a drug testing sample returned a finding for the anabolic steroid nandrolone.

She said she’s since learned it has “long been understood by WADA (World Anti-Doping Agency) that eating pork can lead to a false positive for nandrolone, since certain types of pigs produce it naturally in high amounts.

15 test that produced the adverse analytical finding for the anabolic steroid.

“We concluded that the most likely explanation was a burrito purchased and consumed approximately 10 hours before that drug test from an authentic Mexican food truck that serves pig offal near my house in Beaverton, Oregon,” Houlihan wrote.

“WADA agreed that test proved that there was no build up of this substance in my body, which there would have been if I were taking it regularly,” Houlihan wrote