This URL takes you to a web site that discusses the role of nutrients and proper thyroid function:
Thyroid Dysfunction: Is Your Thyroid Working Properly? | The Diet Channel
If you have an over-active thyroid condition (Graves Disease), you'll likely need more than balanced nutrition to treat it, however. Hope you're seeing a good endocrinologist...it's nothing to mess around with...rapid weight loss, tremors, bulging eyes, nervousness, among other symptoms...