If they actually find precancerous changes on the scope, they'll start repeating it more frequently. Also if you have risk factors - family history, smoking, alcoholic, chronic H. pylori infection/ulcers.
Screening the entire population with scopes though just doesn't scale even if people would tolerate it. It's basically being asked to swallow a garden hose. Not to mention the sedative and perforation risks.
Screening annually is also pretty insane. The average person without risk factors after 50 only gets a colonscopy every decade.
It's sort of chicken and egg.
If they actually find precancerous changes on the scope, they'll start repeating it more frequently. Also if you have risk factors - family history, smoking, alcoholic, chronic H. pylori infection/ulcers.
Screening the entire population with scopes though just doesn't scale even if people would tolerate it. It's basically being asked to swallow a garden hose. Not to mention the sedative and perforation risks.
Screening annually is also pretty insane. The average person without risk factors after 50 only gets a colonscopy every decade.