Wikipedia has an interesting List of countries by past life expectancy that has data from 1950 to 2015 in five-year periods.

In the most recent they have (2010 to 2015) the list looks like this

• Hong Kong, Macau and Japan at 83 years
• Switzerland, Spain, Italy, Singapore, Australia, Iceland, at 82 years
• Israel, France, Sweden, Canada, Norway, and more at 81 years.

USA is surprisingly low (in 43rd place) at 78 years.

Now in 2021 USA is at 76 years, the lowest since 1996.

In terms of ethnicity and culture, USA and Canada are probably most alike.

Back in 1950-1955 the data had Canada and USA close in ranking at #11 and #13 respectively. Their life expectancy was similar at 69.05 and 68.71.

This list of 10 leading causes of death from the CDC shows an increase in the top 5 causes of death (heart, cancer, covid, injuries, stroke)

interesting data.