> The biggest push-back from the medical profession is diagnosing cancers that are not clinically relevant and treatable (eg. A cancer may be detected 15 years before clinically relevant in some cases to my understanding). There is also a cost benefit dynamic of increasing preventative screening, for example lowering the prescribed age for breast screening would save lives but may carry costs for nations or corporations that are unacceptable.

I've watched two people who waited for too long to seek treatment become eaten alive, quite literally, so I would have to imagine that at least on an individual level it would be a good idea to seek this out.

Just to make sure I understand, are you saying that the problem is that people essentially get a very early warning of a diagnosis, so they start coming in for regular checks to see if it has become treatable, but it has not, but they come in fairly frequently, and those frequent visits use a lot of time and thus this process would not scale to the general population?