Thyroid Over-Conversion
Some people, due to various metabolic imbalances convert too much hormone into the active form. This sounds like it would be beneficial but it is not. It causes the cells to produce less receptor sites because they are being bombarded with thyroid hormone, and this will create symptoms of hypothyroidism despite high levels of hormones in the body. What’s so frustrating to me is that most people with thyroid over conversion are still placed on replacement, making the problem even worse.  These are often women who have elevated levels of testosterone, suffer from PCOS, or have insulin Resistance.
The way to deal with Thyroid Over Conversion is by dealing the actual metabolic imbalance first. The root cause is actually the insulin resistance or major imbalance in the sex hormones. Once you deal with these root issues, the thyroid will usually begin to heal and regulate.
For more on balancing out your hormones and dealing with Insulin resistance and PCOS purchase my book

The Simplicity Project ~ A Simple, No-Nonsense Approach To Losing Weight & Changing Your Body Forever!
 
or through