> I would say that it’s strong evidence that Xenon actually works
The only evidence is the claims from the person selling the expensive five-figure Everest packages. It’s the very definition of a conflict of interest.
They also use multiple treatments, not just Xenon. The hikers sleep in hypobaric chambers. Another comment said they used supplemental oxygen but were hiding details about how much.
There is no evidence or even head-to-head testing here. It’s all claims that come from one person, who is also trying to sell the treatment.
But are people repeatedly getting up the mountain in much less time? If so, it really doesn’t matter if it’s because of one particular substance or another, and if not, it would be pretty easy to determine it is fake, right?
If something normally takes two weeks and some guy claims his novel method gets you up there in one, it’s at least easy to verify whether his novel method actually does do it.