Fighting weight loss and obesity

What is the best way to prevent weight loss

Make sure you are eating more than you burn each day and you will not lose weight

This may be a naive question, but did you already have surgery? Is there a reason you would want to prevent weight loss? Like the commenter stated above, make sure you consume more than your calories burned. It sounds like such a predicament to be in! protein shakes with creatine, weight lifting to build muscle and working with a nutritionist may help