Hello. I have neen on Levothyroxine 100 - 125 mcg for 10 years over which time I have gained 2 stone. Despite following a very healthy mostly vegetarian diet with no sugar fizzy drinks alcohol takeaways etc. and low fat milk and natural yoghourt as my main dairy my weight refuses to budge. I have no idea what I am doing wrong but I hate being my current weight and am wondering if T3 makes any difference to weight. If so perhaps I should try to add it to my Levo. Any comments? I am in Somerset. I am not very energetic but try to walk 1 - 2 miles a day since I retired last year. When working I was always driving or at a pc so I had thought at least my regular walking would have some results coupled with removing bread from my diet.