Athletes may ingest banned substances like nandrolone through contaminated meat.

“uh there was a female athlete who tested positive for Deca um the DECA burrito she blamed it on a burrito meat and I remember hearing that and I sort of factiously said and I'll say it again not factiously like if she got caught for Deca I hope she took Deca because to knowingly take a banned substance and get caught and then banned from the sport is one thing but to inadvertently take a band substance as did this Bob sleder and then get banned from your sport that's a real tragedy for multiple reasons”