After reaching a plateau for two years in the US life expectancy has dropped due to behavioral and mental health issues. In my opinion the cause of the destructive mental health behavioral is simply the blow back from the Wall Street cannibalism of the global economy in 2008.

Alcoholism, opioid addiction, suicide and elated diseases are all up.
Only cancer went down while the top ten killers(stroke diabetes, heart...) all went up !
If an American is over 65 life expectancy is the same as Europe.

The UK life expectancy is 84.74 and ranks 33 all nations.
The US ranks 43 at 82.27 years of aamong ge.

The top 3 nations are
Monaco 8952
Japan 84.74
Singapore 84.6
-
Israel 82.27
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Germany80.57


The US has not declined like this since 1993.