“Can obesity be treated?”

Yes, obesity can be treated, but it takes a physician who knows how to treat the disease of obesity. There is no such thing as calorie in and calorie out as we are different "engines" so to speak. It is like saying every car has the same gas mileage. I recommend that you find a good bariatric physician in your area to help by going to: https://obesitymedicine.org/find-obesity-treatment/