Actually, low carb should help you. My doctor and his nutritionist had adapted WW to be low carb (3-4 servings per day) and high protein (10 servings), 2 fruit, 4 fat, 2 dairy and lots of veggies. I do very well on this. You may need to have your blood work done more frequently as you lose. Discuss this with your doctor. Most hypothyroids do not use carbs well. Be sure to use only whole grain unprocessed foods. No white sugar, flour, rice, pasta and bread; but you can get all that in whole grains now. Limit soy to no more than 2-3 servings per week and limit raw broccoli, cauliflower and cabbage - bad for thyroid. Take your medicine on an empty stomach one hour before eating for best results. Drink plenty of water and keep moving. Walking is great and costs very little.