Comparing the European countries and the US the biggest number of bariatric surgeries performed was recorded in the US (250,000 surgeries). This distribution is easily explained by the population size of the US as well as the highest percentage of obese residents (35.7% of adults in the US are obese).
The second biggest number of weight loss surgeries performed was recorded in France (30,450 surgeries). However, the number of surgeries does not correlate with obesity rates, in this case. The obesity prevalence in France is one of the lowest in Europe (11%).
To calculate popularity of weight loss surgeries in particular countries we used ratios of bariatric surgeries done per 10.000 residents and per 1.000 obese adults. According to the statistics, Sweden is the leader in obesity surgery with 9 surgeries performed on 10,000 residents and 9 surgeries performed on 1,000 obese adults. The US is close with 8 surgeries performed on 10,000 residents, whereas France is following with 5. What is interesting, is that the other 3 big Western European countries such as the UK, Germany and Spain are well behind these trends each having ratio of 1 only. Meaning that the popularity of bariatric surgeries in these countries is 9 times lower than in Sweden.