There have been studies that found a positive correlation between thyroid hormone resistance and the symptoms of ADHD in some patients.
http://www.sciencedaily.com/releases/1997/03/970312165726.htm
The question I would have about this research is whether the patients were misdiagnosed with ADHD in the first place, given that we know that thyroid disease can cause ADHD-like symptoms.
Anyone who thinks they might have ADHD would probably do well to have their thyroid levels checked out. For myself, my Dad read an article about thyroid disease when I was a teenager, and suggested that I go to the Doctor. My thyroid function came back as normal, but I don’t know if they test for the specific hormones that were involved in this study.
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