Being "normally" sick (say, with a bit of fever or that kind of things) usually makes me slightly less anxious since being sick is an easy social role. You are supposed not to do much, to rest and to take care of yourself until you get better. That's easy, and that is also what is good for your body in most cases. It doesn't mean I like being sick, I don't and I can become quite depressed if I remain sick for a while, but it won't make me anxious in itself.
On the other hand I have a weird irrational fear of getting poisoned, and I can experience extreme anxiety (sometimes up to full scale panic attacks) if I suspect some harmful substamce has somehow entered my body.
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ouroboros
A bit obsessed with vocabulary, semantics and using the right words. Sorry if it is a concern. It's the way I think, I am not hair-splitting or attacking you.