Hello! Thank you for writing. I understand your concern. I can give you general advices. The best way is to eat healthy and exercise. The more muscle you will have more calories you will burn. Eat a lot of fruits and vegetables. Cut out absolutely fried food, fast food. But as you are having thyroid problems it is better to have a personalised diet by a nutritionist and she/he is going to follow you up by specific measurements as percentage of muscle and fat mass in your total body, arms and legs, bone mass, water mass. This will be the best thing to do. Wish you good health. Thank you. Best regards.