The claim that France/Italy/Spain had obesity rates of 5-10% was a misread of the charts, where I should have said 10-15%. But the OECD reports pretty wide discrepancies among developed nations.
http://www.oecd.org/els/health-systems/49716427.pdf
http://www.oecd.org/health/health-systems/46044572.pdf
Here's the 2017 update; France and Spain have topped 15%, but Italy dropped below 10%. http://www.oecd.org/health/health-systems/Obesity-Update-201...