I'm 19 and 5 years ago I was diagnosed with Hypothyroidism, and was put on Levothyroxine. I'm currently on 100mg of thyroxine.
I've never been overweight but I'm currently trying to cut my body fat and gain muscle tone. I recently calculated I'm only actually eating 1000 calories. Even if I have miss calculated this, I don't think I've miss calculated it by 500 odd calories. BUT I'm not losing weight, if anything I'm staying the same or looking a little 'fluffier'.