That still escapes the main argument: your problem isn't the medicine, your problem is your anxiety. If "this sort of thing would just wreck your day to day ex

That still escapes the main argument: your problem isn't the medicine, your problem is your anxiety. If "this sort of thing would just wreck your day to day existence and destroy your quality of life" (let your own wording sink in), you should work through that exact problem, probably rather sooner than later. Detecting diseases before they actually destroy your life isn't bad, it's good - and so you should perceive it as good. Not because you're a rational acteur, but because it's literally, by definition, in your personal best interest. Take a step back from the panic, just purely observe, and try to see it for what it is: it prevents real suffering - your own very real suffering - and the price to pay is working through imaginary suffering. Getting your blood checked isn't linearly related with fears of death, the exact opposite is the case. Try to see it for what it actually is, instead of intuitively letting panic-mode take over. If your intuition doesn't serve your well-being, proactively go ahead and fix your intuition - you can.