bariatric surgery has around a 68%~ success rate (as in hits goal weight) and around a 2% total failure rate (all weight gained back) it is by far the most effective weight loss intervention that exists by miles and miles.
There are also a variety of surgeries with varying side effects and risk profiles from sleeve gastrectomy to something like a duodenal shift.
It's definitely the case that this is not root causing the issue. There are probably many root causes to increasing obesity with many probably centered around the creation, easy availability, and marketing of calorie dense foods that do not satiate, however, bariatric surgery is something an individual can do while changing most of the root causes requires vast institutional changes.
There are also a variety of surgeries with varying side effects and risk profiles from sleeve gastrectomy to something like a duodenal shift.
It's definitely the case that this is not root causing the issue. There are probably many root causes to increasing obesity with many probably centered around the creation, easy availability, and marketing of calorie dense foods that do not satiate, however, bariatric surgery is something an individual can do while changing most of the root causes requires vast institutional changes.