My aunt's family has a history of hyperthyroidism, and she is all skin and bones. Later she gained a little weight through treatment. I think you'd better cure the disease first. If you can't wait, you can eat some nutrients that help to burn fat, such as fruit and vegetable fiber slices and apple vinegar, which will help to reduce fat. Don't eat some slimming tea and pills indiscriminately, which will have side effects on your health.