Here's something with some evidence: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222401/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222401/ > Conclusions.

Here's something with some evidence: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222401/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222401/ > Conclusions. The high prevalence of obesity in the United States contributes substantially to its poor international ranking in longevity.