I think this difference mostly disappears if you group Americans by wealth. So wealthy Americans have similar life expectancies to those in other countries. It's really the poor that are most affected by our dystopian healthcare system, which is probably a big part of why it never gets fixed.
The obesity adjustment is worth quantifying. US adult obesity: 42% (CDC). UK: 28%, Australia: 31%, Germany: 22%. Those gaps are real, but they don't explain a 2.5x per-capita spending differential. The Commonwealth Fund's 2021 analysis controlled for age, income, and chronic condition burden; the US still spent roughly $5,000 more per capita than the next-highest spender (Switzerland).
Obesity also matters less than assumed in hospital pricing: a hip replacement costs $29,000 commercially in the US regardless of patient BMI, vs. $15,000 in Germany and $9,000 in Spain (iFHP 2024). The cost structure is in the pricing system. Johns Hopkins researchers estimated eliminating US obesity would reduce healthcare spending by about 12%, real but not 2.5x. Repo with methodology: https://github.com/rexrodeo/american-healthcare-conundrum
Hvae you considered that America is a much larger and much more diverse country that these other countries and and it is very different social norms? Obesity is a major problem in America and it is not the fault of the doctors. I wonder if this has anything to do with it?
