What Do You Know About Hashimoto Thyroid Disease? You may have never heard of Hashimoto’s Thyroiditis, but it is the most common cause of unresolved thyroid problems. What do I mean by unresolved? You have thyroid symptoms such as low energy, weight gain, cold hands and feet, your hair is thinning and you have been prescribed medication, but it’s not working…you are still experiencing the symptoms. The medical doctor doesn’t know ...