US life expectancy rate relates to poor healthcare and poor public health more than over testing. When you let a large chunk of the population die from treatable illnesses it's hard to make up for that by treating a subset even better than average.
The US homeless population for example is 1.56 million people and they don't get good healthcare.
That's the message some groups are sending. But, many people have an incentive to save money by reducing testing even it costs many people their lives.
So their exists some cases of over testing, but under testing is also common and a huge risk.
The US homeless population for example is 1.56 million people and they don't get good healthcare.