[throwaway22032]

There are an unfathomable number of possible things that could be wrong with you at any one time. All of those might not be present in 99% of people and present in 1%.

But the 1% is not the same for every disease. If you perform unnecessary interventions on everyone for every disease, then you also perform unnecessary interventions on the 1% of every disease for all of the other diseases that they don't have.

Now you've given everyone weird cancers because you've done thousands of x-rays and CT scans for all manner of things.