 [ Symptoms ] can radioactive iodine cause infertility  i am 24 years old and i want to have children someday down the road if i have radioactive iodine done to help my hyperthyroidism will that cause me to become infertile [ Disease ] this is a good question and you are wise to be thinking ahead as you know radioactive iodine is taken to treat hyperthyroidism you take one dose of the medication and it is taken up by the thyroid gland where it destroys most of the thyroid tissue radioactive iodine does not spread to other body organs it has not been linked to infertility birth defects or cancer in fact radioactive iodine has been in use for over 60 years and has a great track record for safety in short radioactive iodine is a safe treatment for you and should not affect your ability to have children in the future best wishes