Honestly you can lose as much weight as you want. But it's not worth it at all. I didn't take my insulin for the longest time because I wanted to be skinny and it got me no where but the hospital. If my mom wouldn't have found me the night that she did I would be dead right now, just because I wanted to be skinny. You won't feel good at all, you won't even be cute skinny you will look deathly skinny. It's no game. Even now it's hard for me to get my diabetes under control and i struggle with it everyday of my life. Taking your insulin is so important, you don't realize it when you're doing it and you're losing the weight but once you try to bounce back and recover you realize it's what you should have been doing all along. Trust me, take it from somone who has been there, please.