Hmm I understand the issue but these guys choose to do this job. To work in an environment with life support systems the taxpayer paid millions for. They choose to go up there to do very public work for scientific benefit and finding out the way their health is affected is precisely one of the reasons we send people to the ISS in the first place. It's part of the experiment.

There should be some kind of clarity on this, not necessarily the details on the person's health situation but on anything related to the life support system, their activities in space etc. If it's something that's hereditary and would have been the exact same on earth ok. But otherwise there's at least a point to be made for some clarity. It should be part of the deal of going into space IMO. And it's not like anyone's asking to see their warts or rashes. But the issue was grave enough to prompt an emergency return. I don't blame people asking questions.