Five Ways to Support Conversion of T4 to T3

Your thyroid gland makes thyroid hormone in the form of T4, which is then converted into the more active T3 hormone. What you need to know is that T3 hormone is far more potent and active than T4 hormone in your body. If this conversion of T4 to T3 is sluggish, you may feel the effects of low thyroid function even if T4 levels are within the normal range.