In China, the life expectancy already exceeded that of the US. They don't need to spend more on healthcare!
But I suspect it's still probably better than China where many people are simply not counted in stats (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2990197/ etc). These are also people with least or no access to healthcare and education btw, so we can only guess if life expectancy on paper is better than in reality...