America definitely drinks more soda than anyone else: http://www.slate.com/articles/health_and_science/map_of_the_.... 3x as much as most central European countries.
http://www.huffingtonpost.com/2013/07/09/mexico-obesity_n_35...
Relevant numbers from the article:
US obesity rate: 31.8% Mexican obesity rate: 32.8%
Also, Mexican soda exclusively uses cane sugar. I buy Mexican Coke for the new times I drink regular soda for that reason.
Britain, Australia, and New Zealand are also substantially obese. All of those are coming increasingly close to catching America in obesity, with their obesity levels exploding higher.
http://www.socialprogressimperative.org/data/spi/components/...
The United States comes in at 8th highest obesity rate, after Kuwait, Saudi Arabia, Egypt, Jordan, the UAE, South Africa, and Mexico.