Myth: Thyroid medicine will damage the thyroid gland if the thyroid tests are normal
If a person is given thyroid medicine when the thyroid blood tests are normal, or when the thyroid gland is normal, it will damage the thyroid gland.
FALSE. Whereas thyroid medicine can rest a person’s thyroid system for a time no studies have ever shown that it can damage a previously healthy gland, preventing it from functioning normally again after the medicine is discontinued. Actually, resting the thyroid system in the right way can often reset it, much like birth control pills can suppress a woman’s own female hormone system for a time to restore a normal menstrual cycle. For example,