Nate Diaz defended Jon Jones’s defense. (John Locher/Associated Press)

Jon Jones is taking a lot of flak from some of his fellow fighters after failing a performance-enhancing drug test ahead of UFC 200. But Nate Diaz isn’t one of them.

“Everybody’s on steroids,” he said bluntly, while sitting next to UFC boss Dana White at a press conference for UFC 202, where he will fight Conor McGregor.

Because this isn’t the first time Diaz has accused everyone of being on steroids — the 31-year-old said the same thing in February — White took the statement as a joke, as did the crowd of reporters and fans crowding the MGM Grand Arena in Las Vegas. In reality, however, steroid use is no laughing matter in UFC and other mixed martial arts organizations.

To combat the temptation to use performance-enhancing drugs, UFC beefed up its drug policy last year.

The plan, which went into effect a year ago, requires fighters to submit to random in- and out-of-competition testing for banned substances year-round. The program is overseen by the U.S. Anti-Doping Agency to ensure accuracy.

Even more incentive to stay clean, the policy introduced a mandatory two-year suspension for first-time offenders.

Jones has been the only fighter on the much-anticipated UFC 200 card to test positive for PEDs, however, fighter Mark Hunt openly accused his opponent Brock Lesnar of juicing last month. Lesnar, who has spent the last few years enjoying a WWE career, has not been subjected the UFC’s new drug policy because he only agreed to appear at UFC 200 weeks ago.

Lesnar laughed off the claims during a conference call last week.

“I’ve been dealing with that my entire life,” Lesnar said. “I’m a white boy and I’m jacked. Deal with it.”