Weight gain

Your TSH is pretty high, which means your metabolism is slow. What this means is that if you eat the way you normally would, you gain weight. Similarly, you won’t lose weight if you drop your calorie intake as you normally would to lose weight. 

With thyroid disease, you have to reduce your caloric intake substantially to lose weight. A 1500 calorie a day diet and exercise will not result in weight loss. It may however slow or prevent weight gain. Go from there to adjust your calories to actually lose weight.

I do know that with hypothyroidism there are foods that we should avoid such as low calorie foods, cruciferous foods eg broccoli, kale, cauliflower and Brussels sprouts. Almonds, peanuts, walnuts, sweetcorn. Also avoid soya. Hope this helps but also check out Dr Westin Childs on youtube.

I have found that taking levothyroxine at night, at least 4 hrs after eating, eating in a window of time to allow digestion to rest (coffee 7am, breakfast 10:30, lunch, 1:00, dinner 5:30) and eating very low gluten, low sugar, high veggies has made losing weight easy. Also, I'm finding that when I eat seaweed in evening (4-5 pieces of Costco brand), I've suddenly started sleeping all night without waking up!