T3 is the single most important thyroid hormone that your body creates.
It is also the most powerful and biologically active of all thyroid hormones.
But, like anything in life, too much of a good thing can be a problem.
In this article, we are going to explore T3 in more detail. I will walk you through the symptoms which may indicate that your T3 is too high, the various causes of high T3, how to test for it, and whether or not having a high T3 is dangerous.