I'm not sure I'm best placed to talk about the safeguards in terms of their potential health issues, because the link between cognitive load and the potential cognitive overload, and the resulting health issues, is still under-explored. Obviously, we know it is not a good thing for you to be overexposed to overload for an extended period of time, and this is the kind of overload that you would experience if you encounter such parameters as deteriorated sound for an extended period of time.
Again, for right now, my only and perhaps trivial answer is reducing time on task, because we do not know a whole lot more, and there are certain parameters that we can't act upon.