World Bank data suggests that the United States has a lower life expectancy compared to the other major developed economies. Canadian life expectancy is now (2009) 2.5 years longer than in the USA. In 1960, before the development of Canada's public medicare system, the difference was a little less, 1.3 years.
Indeed, the USA has fallen behind its long term nemesis, Cuba. Cubans now live 78.9 years, a couple of ticks more than the U.S. lifespan of 78.7 years.
In 1960 (at the beginning of the Cuban revolution) Cuban's lived 5.9 years less than Americans.