Yes, annual is overkill more likely than not, but there are countries that do periodic CT scans above a certain age. Knowing a number of people in their 30s-50

Yes, annual is overkill more likely than not, but there are countries that do periodic CT scans above a certain age. Knowing a number of people in their 30s-50s who passed or had close calls with slow moving but symptomless cancer caught early only because of an unrelated accident.. I'd think CT scans every 5 years or something past say 40ish probably has a good ROI for the individual. That said, it doesn't have a great ROI for insurance companies, which is why it doesn't happen. There are numerous types of internal organ cancers that are incredibly slow moving (10-20+ years) but by the time they give you symptoms you are in stage 4. And many of these have essentially no alternative screenings for early warning - thyroid / liver / pancreas / kidney / etc.