I thought this was the main goal of things like preventative medicine. Earlier testing, and more frequent testing allows you to catch things while you still 'feel healthy' so they do not become a chronic problem in the long term. Simple things like tracking weight, blood pressure over time. Add in things like colonoscopies, breast exams, I would say most medicine should be preventative, ie keeping you healthy, rather than reactive, of just trying to try you when you are ill.