You don't need to follow a special diet while on thyroid hormone medication, with a couple of exceptions. Avoid foods high in soy protein, which might interfere with the absorption of thyroid hormone. Also avoid excessive amounts of iodine, either in medications or supplements, as this could potentially alter your thyroid hormone level. Most iodine-rich foods, such as iodized products or fish, are acceptable. Aside from these restrictions, you are free to eat whatever you want, but aim for a healthy diet that includes lots of fruits, vegetables, and whole grains. Adopting a nutritious diet for your thyroid not only keeps you feeling good once your thyroid levels are normal, but it helps your digestive system function smoothly and your heart pump efficiently—both of which support healthy metabolism. If you still don't feel well despite your medication, improving your diet and starting an exercise program may help. Following are some tips for healthy eating