Definitely. I managed to stop once for a period of around three months and lost 10kg. When I started again, I gained all that weight back and then some. My University work is also suffering. I have zero motivation to go to lectures and have been getting emails from the Uni about missing lectures. Kinda putting that into the back of mind for now - gotten good at that tbh. I used to be a good student, like perfect scores across the board but I just did my University exams and I know they went horribly.