If you have low or high Thyroid, do you know the cause? Is the cause being treated?
If your Thyroid is too low, your GP can prescribe T4 according to the guidelines. Unfortunately, that's not the active form of Thyroid and if your body can't process the T4 into the active form (e.g. under conditions of insulin resistance and stress), you are no better off. There are a number of reasons for disrupted Thyroid and T4 may not be the answer.
The following causes can underlie Thyroid disease: