There are a number of reasons to feel Lyoto Machida’s 18-month suspension is longer than is fair or reasonable. For one, the substance carries a longer, two-year penalty due to its inclusion in the “Anabolic agents” class alongside anabolic steroids, despite WADA themselves apparently admitting it has “no intrinsic anabolic properties.”
There’s also the fact that there’s no good evidence that 7-keto-DHEA can enhance athletic performance at all, nor is there any evidence it is harmful to athlete health, and one of those two things has to be true under WADA’s own criteria for prohibited substances.