I agree that panic attacks are often indicative of present unhealthiness, just as I agree that having a bleeding bullet-sized wound is indicative of a medical emergency. What I have not agreed with, and what I think I have not seen any reason to believe, is that susceptibility to panic attacks in response to an attack indicate prior unhealthiness, any more than susceptibility to gunshot wounds in response to an attack is prior unhealthiness. In particular, I don't see anything in the paper that claims that.

OK, I've read those posts and I understand what you mean by "unhealthy thoughts". To make sure that I'm understanding your terminology, is this what you have been meaning by "unhealthy" / is a person with "unhealthy thoughts" themselves "unhealthy"? There are a few posts that say that everyone has some "unhealthy thoughts" from time to time, so if the sense of "unhealthy" that you're using is that everyone is unhealthy to some extent, I have been misunderstanding.