Nandrolone: Tyson Fury’s alleged failed test and MMA’s favorite steroid

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It was recently revealed that world heavyweight boxing champion, Tyson Fury, failed a drug test administered by the UK Anti-Doping agency, UKAD. The failure was allegedly for one of the more notorious performance enhancing drugs; nandrolone.

The anabolic steroid, Nandrolone — sometimes referred to by the trade name Deca Durabolin — has shown up in failed tests from a wide range of athletes and sports. Famed US track & field star, Marion Jones; current Manchester City manager and former professional soccer player, Pep Guardiola; the first European to run 100m in under 10 seconds, Linford Christie; and baseball superstar, Roger Clemens, have all tested positive for nandrolone metabolites in the past.There is also a long history of mixed martial artists failing drug tests for nandrolone metabolites. The list includes well known fighters like Josh Barnett, Royce Gracie, Nate Marquardt, Sean Sherk, Dennis Hallman, Joey Beltran, and even female fighter Carina Damm among others. It might be the single most commonly detected PED among mixed martial artists.

Nandrolone is an anabolic steroid which is chemically very similar to testosterone. Testosterone is the body’s natural anabolic steroid, and it would be reasonably accurate to say it is the primary hormone in determining a person’s muscle mass. Nandrolone has a significant effect on muscle mass, and like most anabolic steroids, also aids in protein synthesis, allowing for faster recovery from workouts.

The slight difference in chemical structure between testosterone and nandrolone — nandrolone …

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