This is an interesting map that compares the obesity rate of the U.S. with the entirety of Europe. As you can see, the rate in Europe is much lower, except maybe for Turkey. This is probably due to a couple of different factors, such as overprocessed foods, poverty rates, and a lack of walking opportunities. However, obesity is still much more prevalent in the U.S. than we would've thought had we not seen this map.
There are only a handful of countries, aside from Turkey, that even come close to matching the U.S. obesity rate in Europe. Italy has among the lowest rates in Europe.