"Research shows that nothing doctors recommend has any effect on weight loss except bariatric surgery." Source 2 that you posted contradicts that statement, and

"Research shows that nothing doctors recommend has any effect on weight loss except bariatric surgery." Source 2 that you posted contradicts that statement, and notes that the average person was successful in maintaining some weight loss (about 3%, or 7lbs). That means that about 50% of people are able to maintain a weight loss of greater than 7lbs 5 years after a structured weight-loss program. Source 1 seems to be from a conference, and they don't list specific numbers or cite sources, so I have no idea what "almost all" means. "5) [The only thing that does seem to work in the long term is gastric surgery." That study says that gastric surgery works, it says nothing about the other methods for weight loss.