Bryan Johnson has long been obsessed with “de-aging” itself. The 46-year-old multimillionaire, who made his money by founding various tech companies, spent years of his life and millions of dollars trying to get his body back. similar to a teenager. His health regimen includes taking 54 different supplements every day for breakfast. Those pills apparently helped him prolong his life and, as he put it, “broke the world record for age reversal.” In recent months, however, Johnson stopped taking any of the supplements out of fear that, instead of de-aging him, they would actually “accelerate” his aging.

In November, Johnson tweeted that he stopped taking a supplement known as rapamycin. “Despite the great potential from pre-clinical trials, my team and I came to the conclusion that the benefits of lifelong dosing of Rapamycin are not justified by the great side-effects (intermittent skin/soft tissue infections , lipid abnormalities, glucose elevation, and increased resting heart rate),” he said. “With no known underlying cause, we suspected Rapamycin, and since dose adjustments had no effect, we decided to stop it altogether.”

He added: “Furthermore, on October 27, a new pre-print showed that Rapamycin is one of the few longevity interventions believed to cause increased/accelerated aging in people over 16 epigenetic aging clocks.”

In other words, after taking this experimental drug for half a decade, a new study has come out that suggests it may do the exact opposite of what Johnson wants to do and may, in addition, will give him skin infections.

Johnson, whose obsession with living longer led him to start a new health and fitness startup called Blueprint, is also the subject of a new one Documentary on Netflix. The doc quoted Johnson as saying he had “the most aggressive rapamycin” intake of “anyone in the industry,” the The New York Post reports. “I’m taking it because there’s potentially some longevity benefits,” he added, saying it’s “the kind of thing in the longevity community that people are excited about,” while “out there in the longevity community, it’s still crazy.”

Many of Johnson’s suggestions for longevity aren’t exactly groundbreaking. his basic rules for living longeras prescribed on his Blueprint website, includes things like not drinking or smoking, eating a healthy diet and exercising a few hours a week. Blueprint sells subscription bags of various protein powders, which the company calls “longevity blends.” A recent review of the subscription service called it “just a supplement product, albeit one with a very interesting individual and story behind its creation.” The review also noted that while the powder regimen includes “some good stuff,” it is ultimately too expensive and may not be suitable for different types of people.

While the Blueprint may be somewhat mundane, Johnson’s experiments themselves are not. In the past, he used to blood of his own teenage son to test whether transfusions from a young person have any direct health benefits for someone his age (he since discovered that they don’t exist) and, recently, used “shock treatments” on his genitals in a an apparent effort to reverse the age of his genitals and, thus, creates the erections of an 18-year-old boy. There’s no real telling what the outcome of Johnson’s strange self-experiment will be. At this point, we only have physical results that are not good at the moment. Johnson, who used to look like a normal dude, now self-admittedly like a witch.