Unfortunately, theses 'lifespan' measurements have a lot to do with violent crime, car accidents, suicides, war deaths etc. - i.e. things that aren't so much about health than otherwise.
It's why average lifespan isn't necessarily a very good measure of health outcomes.
I think US is down due to overdoses, which is a kind of health issues, but not necessarily a regular measure of diet and quality of regular medicine, it's an epidemic.
Unfortunately, theses 'lifespan' measurements have a lot to do with violent crime, car accidents, suicides, war deaths etc. - i.e. things that aren't so much about health than otherwise.
It's why average lifespan isn't necessarily a very good measure of health outcomes.
I think US is down due to overdoses, which is a kind of health issues, but not necessarily a regular measure of diet and quality of regular medicine, it's an epidemic.