I thought the same. There are papers analyzing data about that.

https://www.wiserhealthcare.org.au/too-much-of-a-good-thing-...

> As well as being unlikely to be beneficial, full body general health checks in asymptomatic people can potentially be harmful. The main harms are overdiagnosis, detrimental psychological effects, negative effects on health behaviours (for example, failure to quit smoking due to reassurance of good health), complications related to follow-up tests, and unnecessary treatments.