Hi! A very valid question. Statistically, the evidence shows that WLS is the most effective way to lose a significant amount of weight and to reach a more healthy BMI. Yes, you have to make lifestyle changes. It is not a quick fix. What its been for me is a very effective tool that is helping me to have a new relationship with food. I'll have to work at this for the rest of my life. This tool (I had the sleeve) helps me in a way that a the diets I've done in the past did not - i think partly bc for me, I feel like this is my last, best chance to be healthy. You will likely still be hungry or crave things - some people don't, but I for sure do. But this tool helps me with that. My only regret is that I didn't do this sooner. I've lost 140 lbs since December and am healthier than I've been in years. Good luck on your decision! Sent from my SM-G975U using BariatricPal mobile app