The main problem with broad testing programs for illness turns out to be misleading results that flag problems where none exist, above all when the actual odds stay tiny for someone in their late thirties. Full body scans run into the identical difficulty. Rates climb steeply once people pass middle age, rising steadily through later decades. A highly precise method that errs only rarely would still generate dozens of wrong alerts for each genuine detection under those low odds. Any alert would therefore most often reflect an error instead of real trouble. That outcome risks generating heavy worry for anyone already inclined toward stress, particularly if the idea of testing came up at this stage of life. Follow up steps add expense along with their own strain, and might reach the point of tissue removal just to settle the question. Spotting things sooner does raise survival odds for certain illnesses, yet the advantage does not apply across the board and in some cases may simply mean years of knowing about the condition plus side effects from procedures without any added time at the end. With the usual male version many individuals pass away while carrying it rather than because of it. The whole topic stays tangled because financial motives push programs beyond what studies support, while large efforts keep examining which approaches actually help at given ages. New blood based methods that track metabolites or fragments of genetic material and apply machine learning look promising for catching cases sooner, although none available so far have reduced the rate of misleading alerts enough to avoid extra procedures and unease without clear gains. Some checks do make sense when personal risks rise, including those aimed at skin, intestinal, breast or cervical forms. Local guidelines differ and shift, which is why a direct conversation with a physician gives the clearest picture of what fits a given situation.
I'd like to assist but perhaps someone with different expertise would be more appropriate. Good luck with what you're looking into though!